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  1. Ansatte

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English

Henrik Koch

Last ned pressefoto
Last ned pressefoto
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Henrik Koch

Professor
Institutt for kjemi

henrik.koch@ntnu.no
73594165 Realfagbygget, D3-109, Gløshaugen, Høgskoleringen 5
Om Publikasjoner Undervisning Formidling

Om

Henrik Koch (1964) er professor i teoretisk kjemi. Han har master- og doktorgrad fra Aarhus Universitet i Danmark, med professor emeritus Poul Jørgensen som veileder.

Forskningsinteresser

Hans forskningsaktiviteter fokuserer på utvikling og anvendelse av nøyaktige elektronstruktur-metoder for molekyler generelt, og spesifikt for molekyler med sterk kobling til optiske og plasmoniske kavitet. Programvareplattformen er programmet eT (et program for elektronstruktur), som finnes fritt tilgjengelig på etprogram.org.

Nåværende stilling

  • Professor ved Institutt for kjemi ved NTNU i Trondheim (Januar 2022 - )

Les mer i den engelske ansattprofilen

 

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Se alle publikasjoner i Cristin

2025

  • Rossi, Federico; Kjønstad, Eirik Fadum; Angelico, Sara; Koch, Henrik. (2025) Generalized Coupled Cluster Theory for Ground and Excited State Intersections. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Castagnola, Matteo; Ronca, Enrico; Koch, Henrik. (2025) Chiral polaritonics: cavity-mediated enantioselective excitation condensation. Reports on progress in physics (Print)
    Vitenskapelig artikkel
  • Angelico, Sara; Kjønstad, Eirik Fadum; Koch, Henrik. (2025) Determining Minimum Energy Conical Intersections by Enveloping the Seam: Exploring Ground and Excited State Intersections in Coupled Cluster Theory. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • el Moutaoukal, Yassir; Riso, Rosario Roberto; Castagnola, Matteo; Ronca, Enrico; Koch, Henrik. (2025) Strong Coupling Møller-Plesset Perturbation Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Odelius, Michael; Folkestad, Sarai Dery; Saisopa, Thanit; Rattanachai, Yuttakarn; Sailuam, Wutthigrai; Yuzawa, Hayato. (2025) Symmetry Breaking around Aqueous Ammonia Revealed in Nitrogen K-edge X-ray Absorption. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Castagnola, Matteo; Lexander, Marcus Takvam; Koch, Henrik. (2025) Realistic Ab Initio Predictions of Excimer Behavior under Collective Light-Matter Strong Coupling. Physical Review X
    Vitenskapelig artikkel
  • Castagnola, Matteo; Riso, Rosario Roberto; el Moutaoukal, Yassir; Ronca, Enrico; Koch, Henrik. (2025) Strong Coupling Quantum Electrodynamics Hartree-Fock Response Theory. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Haugland, Tor S.; Philbin, John P.; Ghosh, Tushar K.; Chen, Ming; Koch, Henrik; Narang, Prineha. (2025) Understanding the polaritonic ground state in cavity quantum electrodynamics. Journal of Chemical Physics
    Vitenskapelig artikkel

2024

  • Giovannini, Tommaso; Scavino, Marco; Koch, Henrik. (2024) Time-Dependent Multilevel Density Functional Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Angelico, Sara; Koch, Henrik. (2024) Coupled Cluster Theory for Nonadiabatic Dynamics: Nuclear Gradients and Nonadiabatic Couplings in Similarity Constrained Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Ronca, Enrico; Koch, Henrik. (2024) Strong Coupling to Circularly Polarized Photons: Toward Cavity-Induced Enantioselectivity. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Barlini, Alberto; Bianchi, Andrea; Ronca, Enrico; Koch, Henrik. (2024) Theory of Magnetic Properties in Quantum Electrodynamics Environments: Application to Molecular Aromaticity. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Hait, Diptarka; Lahana, Dean; Fajen, O. Jonathan; Paz, Amiel S. P.; Unzueta, Pablo A.; Rana, Bhaskar. (2024) Prediction of photodynamics of 200 nm excited cyclobutanone with linear response electronic structure and ab initio multiple spawning. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Castagnola, Matteo; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik; Schäfer, Christian. (2024) Collective Strong Coupling Modifies Aggregation and Solvation. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • el Moutaoukal, Yassir; Riso, Rosario Roberto; Castagnola, Matteo; Koch, Henrik. (2024) Toward Polaritonic Molecular Orbitals for Large Molecular Systems. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Lexander, Marcus Takvam; Angelico, Sara; Kjønstad, Eirik Fadum; Koch, Henrik. (2024) Analytical Evaluation of Ground State Gradients in Quantum Electrodynamics Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Chang, Yi-Ping; Balciunas, Tadas; Yin, Zhong; Sapunar, Marin; Tenorio, Bruno N. C.; Paul, Alexander Christian. (2024) Electronic dynamics created at conical intersections and its dephasing in aqueous solution. Nature Physics
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2024) Reduced Scaling Correlated Natural Transition Orbitals for Multilevel Coupled Cluster Calculations. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Paul, Alexander Christian; Paul, Regina; Coriani, Sonia; Odelius, Michael; Iannuzzi, Marcella. (2024) Understanding X-ray absorption in liquid water using triple excitations in multilevel coupled cluster theory. Nature Communications
    Vitenskapelig artikkel
  • Castagnola, Matteo; Lexander, Marcus Takvam; Ronca, Enrico; Koch, Henrik. (2024) Strong coupling electron-photon dynamics: A real-time investigation of energy redistribution in molecular polaritons. Physical Review Research (PRResearch)
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Fajen, O. Jonathan; Paul, Alexander Christian; Angelico, Sara; Mayer, Dennis; Gühr, Markus. (2024) Photoinduced hydrogen dissociation in thymine predicted by coupled cluster theory. Nature Communications
    Vitenskapelig artikkel
  • Dey, Sourav; Folkestad, Sarai Dery; Paul, Alexander Christian; Koch, Henrik; Krylov, Anna I.. (2024) Core-ionization spectrum of liquid water. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Paul, Alexander Christian; Paul, Regina; Reinholdt, Peter; Coriani, Sonia; Odelius, Michael. (2024) Quantum Mechanical Versus Molecular Mechanical Embedding Schemes: A Study of the X-ray Absorption Spectra of Aqueous Ammonia and Ammonium. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel

2023

  • Folkestad, Sarai Dery; Paul, Alexander Christian; Ponzi, Aurora; Grazioli, Cesare; Coreno, Marcello; de Simone, Monica. (2023) Electronic Characterization of Glycolaldehyde: Experimental and Theoretical Insights from the Core- and Valence-Level Spectroscopy. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Angelico, Sara; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik. (2023) Coupled cluster cavity Born-Oppenheimer approximation for electronic strong coupling. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2023) Triplet Excited States with Multilevel Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2023) Communication: Non-adiabatic derivative coupling elements for the coupled cluster singles and doubles model. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Grazioli, Laura; Ronca, Enrico; Giovannini, Tommaso; Koch, Henrik. (2023) Strong Coupling in Chiral Cavities: Nonperturbative Framework for Enantiomer Discrimination. Physical Review X
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Sannes, Bendik Støa; Koch, Henrik. (2023) Entanglement coupled cluster theory: Exact spin-adaptation. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Romanelli, Marco; Riso, Rosario Roberto; Haugland, Tor S.; Ronca, Enrico; Corni, Stefano; Koch, Henrik. (2023) Effective Single-Mode Methodology for Strongly Coupled Multimode Molecular-Plasmon Nanosystems. Nano Letters
    Vitenskapelig artikkel
  • Skeidsvoll, Andreas Sæther; Koch, Henrik; Høyvik, Ida-Marie. (2023) Real-time coupled-cluster approaches for electronic multiphoton processes in atoms and molecules. Doctoral theses at NTNU (227)
    Doktorgradsavhandling
  • Haugland, Tor S.; Philbin, John P.; Ghosh, Tushar K.; Chen, Ming; Koch, Henrik; Narang, Prineha. (2023) Understanding the polaritonic ground state in cavity quantum electrodynamics. arXiv.org
    Vitenskapelig artikkel
  • Castagnola, Matteo; Riso, Rosario Roberto; Barlini, Alberto; Ronca, Enrico; Koch, Henrik. (2023) Polaritonic response theory for exact and approximate wave functions. Wiley Interdisciplinary Reviews. Computational Molecular Science
    Vitenskapelig artikkel
  • Balbi, Alice; Skeidsvoll, Andreas Sæther; Koch, Henrik. (2023) Coupled Cluster Simulation of Impulsive Stimulated X-ray Raman Scattering. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Philbin, John P.; Haugland, Tor S.; Ghosh, Tushar K.; Ronca, Enrico; Chen, Ming; Narang, Prineha. (2023) Molecular van der Waals Fluids in Cavity Quantum Electrodynamics. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Skeidsvoll, Andreas Sæther; Koch, Henrik. (2023) Comparing real-time coupled-cluster methods through simulation of collective Rabi oscillations. Physical Review A (PRA)
    Vitenskapelig artikkel

2022

  • Goletto, Linda; Gómez, Sara; Andersen, Josefine H.; Koch, Henrik; Giovannini, Tommaso. (2022) Linear response properties of solvated systems: a computational study. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Schnack-Petersen, Anna Kristina; Koch, Henrik; Coriani, Sonia; Kjønstad, Eirik Fadum. (2022) Efficient implementation of molecular CCSD gradients with Cholesky-decomposed electron repulsion integrals. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Matveeva, Regina; Høyvik, Ida-Marie; Koch, Henrik. (2022) Implementation of Occupied and Virtual Edmiston-Ruedenberg Orbitals Using Cholesky Decomposed Integrals. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Koch, Henrik. (2022) Fragment Localized Molecular Orbitals. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Paul, Alexander Christian; Folkestad, Sarai Dery; Myhre, Rolf Heilemann; Koch, Henrik. (2022) Oscillator Strengths in the Framework of Equation of Motion Multilevel CC3. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Philbin, John P.; Haugland, Tor S.; Ghosh, Tushar K.; Ronca, Enrico; Chen, Ming; Narang, Prineha. (2022) Molecular van der Waals fluids in cavity quantum electrodynamics. arXiv.org
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik. (2022) On the characteristic features of ionization in QED environments . Journal of Chemical Physics
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Marrazzini, Gioia; Scavino, Marco; Koch, Henrik; Cappelli, Chiara. (2022) Integrated Multiscale Multilevel Approach to Open Shell Molecular Systems. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Skeidsvoll, Andreas Sæther; Moitra, Torsha; Balbi, Alice; Paul, Alexander Christian; Coriani, Sonia; Koch, Henrik. (2022) Simulating weak-field attosecond processes with a Lanczos reduced basis approach to time-dependent equation-of-motion coupled-cluster theory. Physical Review A (PRA)
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik. (2022) Molecular orbital theory in cavity QED environments. Nature Communications
    Vitenskapelig artikkel
  • Fedotov, Daniil; Paul, Alexander Christian; Koch, Henrik; Santoro, Fabrizio; Coriani, Sonia; Improta, Roberto. (2022) Excited state absorption of DNA bases in the gas phase and in chloroform solution: a comparative quantum mechanical study. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Moitra, Torsha; Paul, Alexander Christian; Decleva, Piero; Koch, Henrik; Coriani, Sonia. (2022) Multi-electron excitation contributions towards primary and satellite states in the photoelectron spectrum. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel

2021

  • Haugland, Tor Strømsem; Schäfer, Christian; Ronca, Enrico; Rubio, Angel; Koch, Henrik. (2021) Intermolecular interactions in optical cavities: An ab initio QED study. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Goletto, Linda; Kjønstad, Eirik Fadum; Folkestad, Sarai D.; Høyvik, Ida-Marie; Koch, Henrik. (2021) Linear-Scaling Implementation of Multilevel Hartree-Fock Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Marrazzini, Gioia; Giovannini, Tommaso; Scavino, Marco; Egidi, Franco; Cappelli, Chiara; Koch, Henrik. (2021) Multilevel Density Functional Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Hutcheson, Anders; Paul, Alexander Christian; Myhre, Rolf Heilemann; Koch, Henrik; Høyvik, Ida-Marie. (2021) Describing ground and excited state potential energy surfaces for molecular photoswitches using coupled cluster models. Journal of Computational Chemistry
    Vitenskapelig artikkel
  • Gulania, Sahil; Kjønstad, Eirik Fadum; Stanton, John F.; Koch, Henrik; Krylov, Anna I.. (2021) Equation-of-motion coupled-cluster method with double electron-attaching operators: Theory, implementation, and benchmarks. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Fregoni, Jacopo; Haugland, Tor S.; Pipolo, Silvio; Giovannini, Tommaso; Koch, Henrik; Corni, Stefano. (2021) Strong Coupling between Localized Surface Plasmons and Molecules by Coupled Cluster Theory. Nano Letters
    Vitenskapelig artikkel
  • Matveeva, Regina; Erichsen, Merete Falck; Koch, Henrik; Høyvik, Ida-Marie. (2021) The effect of midbond functions on interaction energies computed using MP2 and CCSD(T). Journal of Computational Chemistry
    Vitenskapelig artikkel
  • Hohenstein, Edward G; Yu, Jimmy; Bannwarth, Christoph; Holmgaard List, Nanna; Paul, Alexander Christian; Folkestad, Sarai Dery. (2021) Predictions of Pre-edge Features in Time-Resolved Near-Edge X-ray Absorption Fine Structure Spectroscopy from Hole–Hole Tamm–Dancoff-Approximated Density Functional Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Paul, Alexander Christian; Myhre, Rolf Heilemann; Koch, Henrik. (2021) New and efficient implementation of CC3. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Wolf, Thomas J. A.; Paul, Alexander Christian; Folkestad, Sarai Dery; Myhre, Rolf Heilemann; Cryan, James P.; Berrah, Nora. (2021) Transient Resonant Auger-Meitner Spectra of Photoexcited Thymine . Faraday discussions
    Vitenskapelig artikkel
  • Fedotov, Daniil; Paul, Alexander Christian; Posocco, Paolo; Santoro, Fabrizio; Garavelli, Marco; Koch, Henrik. (2021) Excited State Absorption of Uracil in the Gas Phase: Mapping the Main Decay Paths by Different Electronic Structure Methods. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Goletto, Linda; Koch, Henrik. (2021) Multilevel CC2 and CCSD in Reduced Orbital Spaces: Electronic Excitations in Large Molecular Systems. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel

2020

  • Kjønstad, Eirik Fadum; Folkestad, Sarai Dery; Koch, Henrik. (2020) Accelerated multimodel Newton-type algorithms for faster convergence of ground and excited state coupled cluster equations. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Koch, Henrik; Andersen, Josefine; Balbi, Alice; Coriani, Sonia; Folkestad, Sarai Dery; Giovannini, Tommaso. (2020) eT - an electronic structure program.
    Programvare
  • Skeidsvoll, Andreas Sæther; Balbi, Alice; Koch, Henrik. (2020) Time-dependent coupled-cluster theory for ultrafast transient-absorption spectroscopy. Physical Review A (PRA)
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Myhre, Rolf Heilemann; Andersen, Josefine; Balbi, Alice; Coriani, Sonia. (2020) eT 1.0: An open source electronic structure program with emphasis on coupled cluster and multilevel methods. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Haugland, Tor S.; Enrico, Ronca; Kjønstad, Eirik Fadum; Rubio, Angel; Koch, Henrik. (2020) Coupled Cluster Theory for Molecular Polaritons: Changing Ground and Excited States. Physical Review X
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Koch, Henrik. (2020) Energy-Based Molecular Orbital Localization in a Specific Spatial Region. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2020) Biorthonormal Formalism for Nonadiabatic Coupled Cluster Dynamics. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2020) Equation-of-Motion MLCCSD and CCSD-in-HF Oscillator Strengths and Their Application to Core Excitations. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Torsha, Moitra; Aurora, Ponzi; Koch, Henrik; Coriani, Sonia; Decleva, Piero. (2020) Accurate Description of Photoionization Dynamical Parameters. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel

2019

  • Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Koch, Henrik. (2019) An efficient algorithm for Cholesky decomposition of electron repulsion integrals. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Wolf, Thomas J. A.; Parrish, Robert M; Myhre, Rolf Heilemann; Martinez, Todd J.; Koch, Henrik; Gühr, Marcus. (2019) Observation of Ultrafast Intersystem Crossing in Thymine by Extreme Ultraviolet Time-Resolved Photoelectron Spectroscopy. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2019) An Orbital Invariant Similarity Constrained Coupled Cluster Model. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Faber, Rasmus; Kjønstad, Eirik Fadum; Koch, Henrik; Coriani, Sonia. (2019) Spin adapted implementation of EOM-CCSD for triplet excited states: Probing intersystem crossings of acetylacetone at the carbon and oxygen K-edges. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; Coriani, Sonia; Koch, Henrik. (2019) X-ray and UV spectra of glycine within coupled cluster linear response theory. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2019) Multilevel CC2 and CCSD Methods with Correlated Natural Transition Orbital. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Haugland, Tor S.; Koch, Henrik. (2019) Modeling Chemistry in QED Cavities using Coupled Cluster. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Mastergradsoppgave
  • Carbone, Johanna P; Cheng, Lan; Myhre, Rolf Heilemann; Matthews, Devin A; Koch, Henrik; Coriani, Sonia. (2019) An analysis of the performance of coupled cluster methods for K-edge core excitations and ionizations using standard basis sets. Advances in Quantum Chemistry
    Vitenskapelig artikkel

2018

  • Fales, B Scott; Seritan, Stefan; Settje, Nick F; Levine, Benjamin G; Koch, Henrik; Martinez, Todd J.. (2018) Large-Scale Electron Correlation Calculations: Rank-Reduced Full Configuration Interaction. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Åstrand, Per-Olof; Koch, Henrik; Alsberg, Bjørn Kåre. (2018) Optical rotation from coupled cluster and density functional theories. Doktoravhandlinger ved NTNU (31)
    Doktorgradsavhandling
  • Heilemann Myhre, Rolf; Wolf, Thomas J.A.; Cheng, Lan; Nandi, Saikat; Coriani, Sonia; Gühr, Marcus. (2018) A theoretical and experimental benchmark study of core-excited states in nitrogen. Journal of Chemical Physics
    Vitenskapelig artikkel

2017

  • Kjønstad, Eirik Fadum; Heilemann Myhre, Rolf; Martinez, Todd J.; Koch, Henrik. (2017) Crossing conditions in coupled cluster theory. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Vinje, Jakob; Falck, Merete; Mazzola, Federico; Cooil, Simon Phillip; Koch, Henrik; Høyvik, Ida-Marie. (2017) Tautomerization of thymine using ultraviolet light. Langmuir
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2017) Resolving the Notorious Case of Conical Intersections for Coupled Cluster Dynamics. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Høyvik, Ida-Marie; Heilemann Myhre, Rolf; Koch, Henrik. (2017) Correlated natural transition orbitals for core excitation energies in multilevel coupled cluster models. Journal of Chemical Physics
    Vitenskapelig artikkel
  • J. A. Wolf, Thomas; Heilemann Myhre, Rolf; P. Cryan, James; Coriani, Sonia; Squibb, Richard; Battistoni, Andrea. (2017) Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption. Nature Communications
    Vitenskapelig artikkel
  • Sæther, Sandra; Kjærgaard, Thomas; Koch, Henrik; Høyvik, Ida-Marie. (2017) Density-Based Multilevel Hartree-Fock Model. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2017) Solvent Effects on Optical Rotation: On the Balance between Hydrogen Bonding and Shifts in Dihedral Angles. Journal of Physical Chemistry A
    Vitenskapelig artikkel

2016

  • Hjertenæs, Eirik; Nguyen, Anh Quynh Ngoc; Koch, Henrik. (2016) A ReaxFF force field for sodium intrusion in graphitic cathodes. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Heilemann Myhre, Rolf; Coriani, Sonia; Koch, Henrik. (2016) Near-Edge X-ray Absorption Fine Structure within Multilevel Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2016) Optical Rotation Calculations for Fluorinated Alcohols, Amines, Amides, and Esters. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; Koch, Henrik. (2016) Multilevel coupled cluster theory. Doktoravhandlinger ved NTNU (267)
    Doktorgradsavhandling
  • Falck, Merete; Høyvik, Ida-Marie; Koch, Henrik. (2016) A Study of Thymine to Support Experimentalists. NTNU-IKJ
    Mastergradsoppgave
  • Kjønstad, Eirik F.; Koch, Henrik; Høyvik, Ida-Marie. (2016) Symmetric Coupled Cluster Theory. NTNU-IKJ
    Mastergradsoppgave
  • Haghdani, Shokouh; Gautun, Odd Reidar; Koch, Henrik; Åstrand, Per-Olof. (2016) Optical Rotation Calculations for a Set of Pyrrole Compounds. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Heilemann Myhre, Rolf; Koch, Henrik. (2016) The multilevel CC3 coupled cluster model. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Kjønstad, Eirik; Koch, Henrik. (2016) Symmetric Coupled Cluster Theory. NTNU
    Mastergradsoppgave
  • Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2016) Potential Energy Surfaces and Charge Transfer of PAH-Sodium-PAH Complexes. ChemPhysChem
    Vitenskapelig artikkel
  • Olsen, Gerhard Henning; Grande, Tor; Selbach, Sverre Magnus; Koch, Henrik. (2016) Ferroelectric Tungsten Bronzes. Norwegian University of Science and Technology
    Doktorgradsavhandling
  • Dundas, Karen Oda Hjorth; Høyvik, Ida-Marie; Koch, Henrik. (2016) Density-Based Formulation of Multi-Level Hartree-Fock Theory. NTNU, IKJ
    Mastergradsoppgave
  • Stakvik, Linda; Høyvik, Ida-Marie; Koch, Henrik. (2016) Using Localized Molecular Orbitals in the Multi-level Coupled Cluster Approach. NTNU, IKJ
    Mastergradsoppgave
  • Haghdani, Shokouh; Åstrand, Per-Olof; Koch, Henrik. (2016) Optical Rotation from Coupled Cluster and Density Functional Theory: The Role of Basis Set Convergence. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Hjertenæs, Eirik; Trinh, Thuat; Koch, Henrik. (2016) Chemically accurate energy barriers of small gas molecules in through hexagonal water rings. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel

2015

  • Mehandzhiyski, Aleksandar Yordanov; Riccardi, Enrico; van Erp, Titus Sebastiaan; Koch, Henrik; Åstrand, Per-Olof; Trinh, Thuat. (2015) Density Functional Theory Study on the Interactions of Metal Ions with Long Chain Deprotonated Carboxylic Acids. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Coriani, Sonia; Koch, Henrik. (2015) Communication: X-ray absorption spectra and core-ionization potentials within a core-valence separated coupled cluster framework. Journal of Chemical Physics
    Vitenskapelig artikkel

2014

  • Skjelbred, Kristin Marie; Koch, Henrik. (2014) Calculation of Transition Moments Using the Extended Coupled Cluster Model ECC2. NTNU, IKJ
    Mastergradsoppgave
  • Egidi, Franco; Segado, Mireia; Koch, Henrik; Cappelli, Chiara; Barone, Vincenzo. (2014) A benchmark study of electronic excitation energies, transition moments, and excited-state energy gradients on the nicotine molecule. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; Sanchez De Meras, Alfredo M J; Koch, Henrik. (2014) Multi-level coupled cluster theory. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Aidas, Kestutis; Angeli, Celestino; Bak, Keld L.; Bakken, Vebjørn; Bast, Radovan; Boman, Linus. (2014) The Dalton quantum chemistry program system. Wiley Interdisciplinary Reviews. Computational Molecular Science
    Vitenskapelig artikkel

2013

  • Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2013) Assessment of density functionals for van der Waals complexes of sodium and benzene. Molecular Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; de Merás, Alfredo Sánchez; Koch, Henrik. (2013) The extended CC2 model ECC2. Molecular Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; Koch, Henrik. (2013) Development and implementation of extended CC2 models. NTNU, IKJ
    Mastergradsoppgave
  • Tveeikrem, Marit Elise Endresen; Koch, Henrik. (2013) Quantum Chemical Calculations on the Physisorption of Molecular Hydrogen on N-doped Graphene. NTNU, IKJ
    Mastergradsoppgave

2011

  • Cacheiro, Javier Lopez; Pedersen, Thomas Bondo; Fernández, Berta; Sánchez de Merás, Alfredo; Koch, Henrik. (2011) The CCSD(T) model with Cholesky decomposition of orbital energy denominators. International Journal of Quantum Chemistry
    Vitenskapelig artikkel
  • Hjertenæs, Eirik; Koch, Henrik. (2011) Part A: Investigations of Sodium-Graphite Interaction Part B: Structures and conformational Energies of 1,2-Dihaloethane and Silane Analouges Part C: Development of Ab Initio computational Methods based on non-orthogonal Slater Determinants. NTNU, IKJ
    Mastergradsoppgave

2010

  • Høyvik, Ida-Marie; Koch, Henrik. (2010) Part A: Structures and conformational energies of selected fluoropropenes. Part B: Alternative forms of exchange correlation functionsals derived from pair-creation transformations. NTNU, Institutt for kjemi
    Mastergradsoppgave
  • de Meras, AMJS; Koch, Henrik; Cuesta, IG; Boman, Linus. (2010) Cholesky decomposition-based definition of atomic subsystems in electronic structure calculations. Journal of Chemical Physics
    Vitenskapelig artikkel

2009

  • Boman, Mats Linus Henrik; Koch, Henrik. (2009) Coupled Cluster Response Theory in Parameter Subspaces. International Journal of Quantum Chemistry
    Vitenskapelig artikkel

2008

  • Koch, Henrik; Boman, Linus; Sanchez de Meras, Alfredo. (2008) Methods specific Cholesky decomposition: Coulomb and exchange. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Aquilante, F; Pedersen, TB; Lindh, R; Roos, BO; De Meras, AS; Koch, Henrik. (2008) Accurate ab initio density fitting for multiconfigurational self-consistent field methods. Journal of Chemical Physics
    Vitenskapelig artikkel

2004

  • Pedersen, Thomas Bondo; Sánchez de Merá, Alfredo MJ; Koch, Henrik. (2004) Polarizability and optical rotation calculated from the approximate coupled cluster singles and doubles CC2 linear response theory using Cholesky decomposition. Journal of Chemical Physics
    Vitenskapelig artikkel

Tidsskriftspublikasjoner

  • Rossi, Federico; Kjønstad, Eirik Fadum; Angelico, Sara; Koch, Henrik. (2025) Generalized Coupled Cluster Theory for Ground and Excited State Intersections. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Castagnola, Matteo; Ronca, Enrico; Koch, Henrik. (2025) Chiral polaritonics: cavity-mediated enantioselective excitation condensation. Reports on progress in physics (Print)
    Vitenskapelig artikkel
  • Angelico, Sara; Kjønstad, Eirik Fadum; Koch, Henrik. (2025) Determining Minimum Energy Conical Intersections by Enveloping the Seam: Exploring Ground and Excited State Intersections in Coupled Cluster Theory. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • el Moutaoukal, Yassir; Riso, Rosario Roberto; Castagnola, Matteo; Ronca, Enrico; Koch, Henrik. (2025) Strong Coupling Møller-Plesset Perturbation Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Odelius, Michael; Folkestad, Sarai Dery; Saisopa, Thanit; Rattanachai, Yuttakarn; Sailuam, Wutthigrai; Yuzawa, Hayato. (2025) Symmetry Breaking around Aqueous Ammonia Revealed in Nitrogen K-edge X-ray Absorption. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Castagnola, Matteo; Lexander, Marcus Takvam; Koch, Henrik. (2025) Realistic Ab Initio Predictions of Excimer Behavior under Collective Light-Matter Strong Coupling. Physical Review X
    Vitenskapelig artikkel
  • Castagnola, Matteo; Riso, Rosario Roberto; el Moutaoukal, Yassir; Ronca, Enrico; Koch, Henrik. (2025) Strong Coupling Quantum Electrodynamics Hartree-Fock Response Theory. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Haugland, Tor S.; Philbin, John P.; Ghosh, Tushar K.; Chen, Ming; Koch, Henrik; Narang, Prineha. (2025) Understanding the polaritonic ground state in cavity quantum electrodynamics. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Scavino, Marco; Koch, Henrik. (2024) Time-Dependent Multilevel Density Functional Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Angelico, Sara; Koch, Henrik. (2024) Coupled Cluster Theory for Nonadiabatic Dynamics: Nuclear Gradients and Nonadiabatic Couplings in Similarity Constrained Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Ronca, Enrico; Koch, Henrik. (2024) Strong Coupling to Circularly Polarized Photons: Toward Cavity-Induced Enantioselectivity. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Barlini, Alberto; Bianchi, Andrea; Ronca, Enrico; Koch, Henrik. (2024) Theory of Magnetic Properties in Quantum Electrodynamics Environments: Application to Molecular Aromaticity. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Hait, Diptarka; Lahana, Dean; Fajen, O. Jonathan; Paz, Amiel S. P.; Unzueta, Pablo A.; Rana, Bhaskar. (2024) Prediction of photodynamics of 200 nm excited cyclobutanone with linear response electronic structure and ab initio multiple spawning. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Castagnola, Matteo; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik; Schäfer, Christian. (2024) Collective Strong Coupling Modifies Aggregation and Solvation. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • el Moutaoukal, Yassir; Riso, Rosario Roberto; Castagnola, Matteo; Koch, Henrik. (2024) Toward Polaritonic Molecular Orbitals for Large Molecular Systems. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Lexander, Marcus Takvam; Angelico, Sara; Kjønstad, Eirik Fadum; Koch, Henrik. (2024) Analytical Evaluation of Ground State Gradients in Quantum Electrodynamics Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Chang, Yi-Ping; Balciunas, Tadas; Yin, Zhong; Sapunar, Marin; Tenorio, Bruno N. C.; Paul, Alexander Christian. (2024) Electronic dynamics created at conical intersections and its dephasing in aqueous solution. Nature Physics
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2024) Reduced Scaling Correlated Natural Transition Orbitals for Multilevel Coupled Cluster Calculations. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Paul, Alexander Christian; Paul, Regina; Coriani, Sonia; Odelius, Michael; Iannuzzi, Marcella. (2024) Understanding X-ray absorption in liquid water using triple excitations in multilevel coupled cluster theory. Nature Communications
    Vitenskapelig artikkel
  • Castagnola, Matteo; Lexander, Marcus Takvam; Ronca, Enrico; Koch, Henrik. (2024) Strong coupling electron-photon dynamics: A real-time investigation of energy redistribution in molecular polaritons. Physical Review Research (PRResearch)
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Fajen, O. Jonathan; Paul, Alexander Christian; Angelico, Sara; Mayer, Dennis; Gühr, Markus. (2024) Photoinduced hydrogen dissociation in thymine predicted by coupled cluster theory. Nature Communications
    Vitenskapelig artikkel
  • Dey, Sourav; Folkestad, Sarai Dery; Paul, Alexander Christian; Koch, Henrik; Krylov, Anna I.. (2024) Core-ionization spectrum of liquid water. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Paul, Alexander Christian; Paul, Regina; Reinholdt, Peter; Coriani, Sonia; Odelius, Michael. (2024) Quantum Mechanical Versus Molecular Mechanical Embedding Schemes: A Study of the X-ray Absorption Spectra of Aqueous Ammonia and Ammonium. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Paul, Alexander Christian; Ponzi, Aurora; Grazioli, Cesare; Coreno, Marcello; de Simone, Monica. (2023) Electronic Characterization of Glycolaldehyde: Experimental and Theoretical Insights from the Core- and Valence-Level Spectroscopy. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Angelico, Sara; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik. (2023) Coupled cluster cavity Born-Oppenheimer approximation for electronic strong coupling. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2023) Triplet Excited States with Multilevel Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2023) Communication: Non-adiabatic derivative coupling elements for the coupled cluster singles and doubles model. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Grazioli, Laura; Ronca, Enrico; Giovannini, Tommaso; Koch, Henrik. (2023) Strong Coupling in Chiral Cavities: Nonperturbative Framework for Enantiomer Discrimination. Physical Review X
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Sannes, Bendik Støa; Koch, Henrik. (2023) Entanglement coupled cluster theory: Exact spin-adaptation. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Romanelli, Marco; Riso, Rosario Roberto; Haugland, Tor S.; Ronca, Enrico; Corni, Stefano; Koch, Henrik. (2023) Effective Single-Mode Methodology for Strongly Coupled Multimode Molecular-Plasmon Nanosystems. Nano Letters
    Vitenskapelig artikkel
  • Haugland, Tor S.; Philbin, John P.; Ghosh, Tushar K.; Chen, Ming; Koch, Henrik; Narang, Prineha. (2023) Understanding the polaritonic ground state in cavity quantum electrodynamics. arXiv.org
    Vitenskapelig artikkel
  • Castagnola, Matteo; Riso, Rosario Roberto; Barlini, Alberto; Ronca, Enrico; Koch, Henrik. (2023) Polaritonic response theory for exact and approximate wave functions. Wiley Interdisciplinary Reviews. Computational Molecular Science
    Vitenskapelig artikkel
  • Balbi, Alice; Skeidsvoll, Andreas Sæther; Koch, Henrik. (2023) Coupled Cluster Simulation of Impulsive Stimulated X-ray Raman Scattering. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Philbin, John P.; Haugland, Tor S.; Ghosh, Tushar K.; Ronca, Enrico; Chen, Ming; Narang, Prineha. (2023) Molecular van der Waals Fluids in Cavity Quantum Electrodynamics. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Skeidsvoll, Andreas Sæther; Koch, Henrik. (2023) Comparing real-time coupled-cluster methods through simulation of collective Rabi oscillations. Physical Review A (PRA)
    Vitenskapelig artikkel
  • Goletto, Linda; Gómez, Sara; Andersen, Josefine H.; Koch, Henrik; Giovannini, Tommaso. (2022) Linear response properties of solvated systems: a computational study. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Schnack-Petersen, Anna Kristina; Koch, Henrik; Coriani, Sonia; Kjønstad, Eirik Fadum. (2022) Efficient implementation of molecular CCSD gradients with Cholesky-decomposed electron repulsion integrals. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Matveeva, Regina; Høyvik, Ida-Marie; Koch, Henrik. (2022) Implementation of Occupied and Virtual Edmiston-Ruedenberg Orbitals Using Cholesky Decomposed Integrals. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Koch, Henrik. (2022) Fragment Localized Molecular Orbitals. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Paul, Alexander Christian; Folkestad, Sarai Dery; Myhre, Rolf Heilemann; Koch, Henrik. (2022) Oscillator Strengths in the Framework of Equation of Motion Multilevel CC3. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Philbin, John P.; Haugland, Tor S.; Ghosh, Tushar K.; Ronca, Enrico; Chen, Ming; Narang, Prineha. (2022) Molecular van der Waals fluids in cavity quantum electrodynamics. arXiv.org
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik. (2022) On the characteristic features of ionization in QED environments . Journal of Chemical Physics
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Marrazzini, Gioia; Scavino, Marco; Koch, Henrik; Cappelli, Chiara. (2022) Integrated Multiscale Multilevel Approach to Open Shell Molecular Systems. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Skeidsvoll, Andreas Sæther; Moitra, Torsha; Balbi, Alice; Paul, Alexander Christian; Coriani, Sonia; Koch, Henrik. (2022) Simulating weak-field attosecond processes with a Lanczos reduced basis approach to time-dependent equation-of-motion coupled-cluster theory. Physical Review A (PRA)
    Vitenskapelig artikkel
  • Riso, Rosario Roberto; Haugland, Tor S.; Ronca, Enrico; Koch, Henrik. (2022) Molecular orbital theory in cavity QED environments. Nature Communications
    Vitenskapelig artikkel
  • Fedotov, Daniil; Paul, Alexander Christian; Koch, Henrik; Santoro, Fabrizio; Coriani, Sonia; Improta, Roberto. (2022) Excited state absorption of DNA bases in the gas phase and in chloroform solution: a comparative quantum mechanical study. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Moitra, Torsha; Paul, Alexander Christian; Decleva, Piero; Koch, Henrik; Coriani, Sonia. (2022) Multi-electron excitation contributions towards primary and satellite states in the photoelectron spectrum. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Haugland, Tor Strømsem; Schäfer, Christian; Ronca, Enrico; Rubio, Angel; Koch, Henrik. (2021) Intermolecular interactions in optical cavities: An ab initio QED study. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Goletto, Linda; Kjønstad, Eirik Fadum; Folkestad, Sarai D.; Høyvik, Ida-Marie; Koch, Henrik. (2021) Linear-Scaling Implementation of Multilevel Hartree-Fock Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Marrazzini, Gioia; Giovannini, Tommaso; Scavino, Marco; Egidi, Franco; Cappelli, Chiara; Koch, Henrik. (2021) Multilevel Density Functional Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Hutcheson, Anders; Paul, Alexander Christian; Myhre, Rolf Heilemann; Koch, Henrik; Høyvik, Ida-Marie. (2021) Describing ground and excited state potential energy surfaces for molecular photoswitches using coupled cluster models. Journal of Computational Chemistry
    Vitenskapelig artikkel
  • Gulania, Sahil; Kjønstad, Eirik Fadum; Stanton, John F.; Koch, Henrik; Krylov, Anna I.. (2021) Equation-of-motion coupled-cluster method with double electron-attaching operators: Theory, implementation, and benchmarks. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Fregoni, Jacopo; Haugland, Tor S.; Pipolo, Silvio; Giovannini, Tommaso; Koch, Henrik; Corni, Stefano. (2021) Strong Coupling between Localized Surface Plasmons and Molecules by Coupled Cluster Theory. Nano Letters
    Vitenskapelig artikkel
  • Matveeva, Regina; Erichsen, Merete Falck; Koch, Henrik; Høyvik, Ida-Marie. (2021) The effect of midbond functions on interaction energies computed using MP2 and CCSD(T). Journal of Computational Chemistry
    Vitenskapelig artikkel
  • Hohenstein, Edward G; Yu, Jimmy; Bannwarth, Christoph; Holmgaard List, Nanna; Paul, Alexander Christian; Folkestad, Sarai Dery. (2021) Predictions of Pre-edge Features in Time-Resolved Near-Edge X-ray Absorption Fine Structure Spectroscopy from Hole–Hole Tamm–Dancoff-Approximated Density Functional Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Paul, Alexander Christian; Myhre, Rolf Heilemann; Koch, Henrik. (2021) New and efficient implementation of CC3. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Wolf, Thomas J. A.; Paul, Alexander Christian; Folkestad, Sarai Dery; Myhre, Rolf Heilemann; Cryan, James P.; Berrah, Nora. (2021) Transient Resonant Auger-Meitner Spectra of Photoexcited Thymine . Faraday discussions
    Vitenskapelig artikkel
  • Fedotov, Daniil; Paul, Alexander Christian; Posocco, Paolo; Santoro, Fabrizio; Garavelli, Marco; Koch, Henrik. (2021) Excited State Absorption of Uracil in the Gas Phase: Mapping the Main Decay Paths by Different Electronic Structure Methods. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Goletto, Linda; Koch, Henrik. (2021) Multilevel CC2 and CCSD in Reduced Orbital Spaces: Electronic Excitations in Large Molecular Systems. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Folkestad, Sarai Dery; Koch, Henrik. (2020) Accelerated multimodel Newton-type algorithms for faster convergence of ground and excited state coupled cluster equations. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Skeidsvoll, Andreas Sæther; Balbi, Alice; Koch, Henrik. (2020) Time-dependent coupled-cluster theory for ultrafast transient-absorption spectroscopy. Physical Review A (PRA)
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Myhre, Rolf Heilemann; Andersen, Josefine; Balbi, Alice; Coriani, Sonia. (2020) eT 1.0: An open source electronic structure program with emphasis on coupled cluster and multilevel methods. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Haugland, Tor S.; Enrico, Ronca; Kjønstad, Eirik Fadum; Rubio, Angel; Koch, Henrik. (2020) Coupled Cluster Theory for Molecular Polaritons: Changing Ground and Excited States. Physical Review X
    Vitenskapelig artikkel
  • Giovannini, Tommaso; Koch, Henrik. (2020) Energy-Based Molecular Orbital Localization in a Specific Spatial Region. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2020) Biorthonormal Formalism for Nonadiabatic Coupled Cluster Dynamics. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2020) Equation-of-Motion MLCCSD and CCSD-in-HF Oscillator Strengths and Their Application to Core Excitations. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Torsha, Moitra; Aurora, Ponzi; Koch, Henrik; Coriani, Sonia; Decleva, Piero. (2020) Accurate Description of Photoionization Dynamical Parameters. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Koch, Henrik. (2019) An efficient algorithm for Cholesky decomposition of electron repulsion integrals. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Wolf, Thomas J. A.; Parrish, Robert M; Myhre, Rolf Heilemann; Martinez, Todd J.; Koch, Henrik; Gühr, Marcus. (2019) Observation of Ultrafast Intersystem Crossing in Thymine by Extreme Ultraviolet Time-Resolved Photoelectron Spectroscopy. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2019) An Orbital Invariant Similarity Constrained Coupled Cluster Model. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Faber, Rasmus; Kjønstad, Eirik Fadum; Koch, Henrik; Coriani, Sonia. (2019) Spin adapted implementation of EOM-CCSD for triplet excited states: Probing intersystem crossings of acetylacetone at the carbon and oxygen K-edges. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; Coriani, Sonia; Koch, Henrik. (2019) X-ray and UV spectra of glycine within coupled cluster linear response theory. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Folkestad, Sarai Dery; Koch, Henrik. (2019) Multilevel CC2 and CCSD Methods with Correlated Natural Transition Orbital. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Carbone, Johanna P; Cheng, Lan; Myhre, Rolf Heilemann; Matthews, Devin A; Koch, Henrik; Coriani, Sonia. (2019) An analysis of the performance of coupled cluster methods for K-edge core excitations and ionizations using standard basis sets. Advances in Quantum Chemistry
    Vitenskapelig artikkel
  • Fales, B Scott; Seritan, Stefan; Settje, Nick F; Levine, Benjamin G; Koch, Henrik; Martinez, Todd J.. (2018) Large-Scale Electron Correlation Calculations: Rank-Reduced Full Configuration Interaction. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Heilemann Myhre, Rolf; Wolf, Thomas J.A.; Cheng, Lan; Nandi, Saikat; Coriani, Sonia; Gühr, Marcus. (2018) A theoretical and experimental benchmark study of core-excited states in nitrogen. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Heilemann Myhre, Rolf; Martinez, Todd J.; Koch, Henrik. (2017) Crossing conditions in coupled cluster theory. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Vinje, Jakob; Falck, Merete; Mazzola, Federico; Cooil, Simon Phillip; Koch, Henrik; Høyvik, Ida-Marie. (2017) Tautomerization of thymine using ultraviolet light. Langmuir
    Vitenskapelig artikkel
  • Kjønstad, Eirik Fadum; Koch, Henrik. (2017) Resolving the Notorious Case of Conical Intersections for Coupled Cluster Dynamics. The Journal of Physical Chemistry Letters
    Vitenskapelig artikkel
  • Høyvik, Ida-Marie; Heilemann Myhre, Rolf; Koch, Henrik. (2017) Correlated natural transition orbitals for core excitation energies in multilevel coupled cluster models. Journal of Chemical Physics
    Vitenskapelig artikkel
  • J. A. Wolf, Thomas; Heilemann Myhre, Rolf; P. Cryan, James; Coriani, Sonia; Squibb, Richard; Battistoni, Andrea. (2017) Probing ultrafast ππ*/nπ* internal conversion in organic chromophores via K-edge resonant absorption. Nature Communications
    Vitenskapelig artikkel
  • Sæther, Sandra; Kjærgaard, Thomas; Koch, Henrik; Høyvik, Ida-Marie. (2017) Density-Based Multilevel Hartree-Fock Model. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2017) Solvent Effects on Optical Rotation: On the Balance between Hydrogen Bonding and Shifts in Dihedral Angles. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Hjertenæs, Eirik; Nguyen, Anh Quynh Ngoc; Koch, Henrik. (2016) A ReaxFF force field for sodium intrusion in graphitic cathodes. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Heilemann Myhre, Rolf; Coriani, Sonia; Koch, Henrik. (2016) Near-Edge X-ray Absorption Fine Structure within Multilevel Coupled Cluster Theory. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2016) Optical Rotation Calculations for Fluorinated Alcohols, Amines, Amides, and Esters. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Gautun, Odd Reidar; Koch, Henrik; Åstrand, Per-Olof. (2016) Optical Rotation Calculations for a Set of Pyrrole Compounds. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Heilemann Myhre, Rolf; Koch, Henrik. (2016) The multilevel CC3 coupled cluster model. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2016) Potential Energy Surfaces and Charge Transfer of PAH-Sodium-PAH Complexes. ChemPhysChem
    Vitenskapelig artikkel
  • Haghdani, Shokouh; Åstrand, Per-Olof; Koch, Henrik. (2016) Optical Rotation from Coupled Cluster and Density Functional Theory: The Role of Basis Set Convergence. Journal of Chemical Theory and Computation
    Vitenskapelig artikkel
  • Hjertenæs, Eirik; Trinh, Thuat; Koch, Henrik. (2016) Chemically accurate energy barriers of small gas molecules in through hexagonal water rings. Physical Chemistry, Chemical Physics - PCCP
    Vitenskapelig artikkel
  • Mehandzhiyski, Aleksandar Yordanov; Riccardi, Enrico; van Erp, Titus Sebastiaan; Koch, Henrik; Åstrand, Per-Olof; Trinh, Thuat. (2015) Density Functional Theory Study on the Interactions of Metal Ions with Long Chain Deprotonated Carboxylic Acids. Journal of Physical Chemistry A
    Vitenskapelig artikkel
  • Coriani, Sonia; Koch, Henrik. (2015) Communication: X-ray absorption spectra and core-ionization potentials within a core-valence separated coupled cluster framework. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Egidi, Franco; Segado, Mireia; Koch, Henrik; Cappelli, Chiara; Barone, Vincenzo. (2014) A benchmark study of electronic excitation energies, transition moments, and excited-state energy gradients on the nicotine molecule. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; Sanchez De Meras, Alfredo M J; Koch, Henrik. (2014) Multi-level coupled cluster theory. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Aidas, Kestutis; Angeli, Celestino; Bak, Keld L.; Bakken, Vebjørn; Bast, Radovan; Boman, Linus. (2014) The Dalton quantum chemistry program system. Wiley Interdisciplinary Reviews. Computational Molecular Science
    Vitenskapelig artikkel
  • Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2013) Assessment of density functionals for van der Waals complexes of sodium and benzene. Molecular Physics
    Vitenskapelig artikkel
  • Myhre, Rolf Heilemann; de Merás, Alfredo Sánchez; Koch, Henrik. (2013) The extended CC2 model ECC2. Molecular Physics
    Vitenskapelig artikkel
  • Cacheiro, Javier Lopez; Pedersen, Thomas Bondo; Fernández, Berta; Sánchez de Merás, Alfredo; Koch, Henrik. (2011) The CCSD(T) model with Cholesky decomposition of orbital energy denominators. International Journal of Quantum Chemistry
    Vitenskapelig artikkel
  • de Meras, AMJS; Koch, Henrik; Cuesta, IG; Boman, Linus. (2010) Cholesky decomposition-based definition of atomic subsystems in electronic structure calculations. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Boman, Mats Linus Henrik; Koch, Henrik. (2009) Coupled Cluster Response Theory in Parameter Subspaces. International Journal of Quantum Chemistry
    Vitenskapelig artikkel
  • Koch, Henrik; Boman, Linus; Sanchez de Meras, Alfredo. (2008) Methods specific Cholesky decomposition: Coulomb and exchange. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Aquilante, F; Pedersen, TB; Lindh, R; Roos, BO; De Meras, AS; Koch, Henrik. (2008) Accurate ab initio density fitting for multiconfigurational self-consistent field methods. Journal of Chemical Physics
    Vitenskapelig artikkel
  • Pedersen, Thomas Bondo; Sánchez de Merá, Alfredo MJ; Koch, Henrik. (2004) Polarizability and optical rotation calculated from the approximate coupled cluster singles and doubles CC2 linear response theory using Cholesky decomposition. Journal of Chemical Physics
    Vitenskapelig artikkel

Rapport

  • Skeidsvoll, Andreas Sæther; Koch, Henrik; Høyvik, Ida-Marie. (2023) Real-time coupled-cluster approaches for electronic multiphoton processes in atoms and molecules. Doctoral theses at NTNU (227)
    Doktorgradsavhandling
  • Haugland, Tor S.; Koch, Henrik. (2019) Modeling Chemistry in QED Cavities using Coupled Cluster. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
    Mastergradsoppgave
  • Haghdani, Shokouh; Åstrand, Per-Olof; Koch, Henrik; Alsberg, Bjørn Kåre. (2018) Optical rotation from coupled cluster and density functional theories. Doktoravhandlinger ved NTNU (31)
    Doktorgradsavhandling
  • Myhre, Rolf Heilemann; Koch, Henrik. (2016) Multilevel coupled cluster theory. Doktoravhandlinger ved NTNU (267)
    Doktorgradsavhandling
  • Falck, Merete; Høyvik, Ida-Marie; Koch, Henrik. (2016) A Study of Thymine to Support Experimentalists. NTNU-IKJ
    Mastergradsoppgave
  • Kjønstad, Eirik F.; Koch, Henrik; Høyvik, Ida-Marie. (2016) Symmetric Coupled Cluster Theory. NTNU-IKJ
    Mastergradsoppgave
  • Kjønstad, Eirik; Koch, Henrik. (2016) Symmetric Coupled Cluster Theory. NTNU
    Mastergradsoppgave
  • Olsen, Gerhard Henning; Grande, Tor; Selbach, Sverre Magnus; Koch, Henrik. (2016) Ferroelectric Tungsten Bronzes. Norwegian University of Science and Technology
    Doktorgradsavhandling
  • Dundas, Karen Oda Hjorth; Høyvik, Ida-Marie; Koch, Henrik. (2016) Density-Based Formulation of Multi-Level Hartree-Fock Theory. NTNU, IKJ
    Mastergradsoppgave
  • Stakvik, Linda; Høyvik, Ida-Marie; Koch, Henrik. (2016) Using Localized Molecular Orbitals in the Multi-level Coupled Cluster Approach. NTNU, IKJ
    Mastergradsoppgave
  • Skjelbred, Kristin Marie; Koch, Henrik. (2014) Calculation of Transition Moments Using the Extended Coupled Cluster Model ECC2. NTNU, IKJ
    Mastergradsoppgave
  • Myhre, Rolf Heilemann; Koch, Henrik. (2013) Development and implementation of extended CC2 models. NTNU, IKJ
    Mastergradsoppgave
  • Tveeikrem, Marit Elise Endresen; Koch, Henrik. (2013) Quantum Chemical Calculations on the Physisorption of Molecular Hydrogen on N-doped Graphene. NTNU, IKJ
    Mastergradsoppgave
  • Hjertenæs, Eirik; Koch, Henrik. (2011) Part A: Investigations of Sodium-Graphite Interaction Part B: Structures and conformational Energies of 1,2-Dihaloethane and Silane Analouges Part C: Development of Ab Initio computational Methods based on non-orthogonal Slater Determinants. NTNU, IKJ
    Mastergradsoppgave
  • Høyvik, Ida-Marie; Koch, Henrik. (2010) Part A: Structures and conformational energies of selected fluoropropenes. Part B: Alternative forms of exchange correlation functionsals derived from pair-creation transformations. NTNU, Institutt for kjemi
    Mastergradsoppgave

Produkt

  • Koch, Henrik; Andersen, Josefine; Balbi, Alice; Coriani, Sonia; Folkestad, Sarai Dery; Giovannini, Tommaso. (2020) eT - an electronic structure program.
    Programvare

Undervisning

Emner

  • TKJ4510 - Applied Theoretical Chemistry, Specialization Project
  • KJ2900 - Bachelor project in Chemistry
  • TKJ4530 - Nanotechnology, Specialization Project
  • KJ8206 - Advanced Quantum Chemical Methods

Formidling

2022

  • Vitenskapelig foredrag
    Folkestad, Sarai Dery; Sannes, Bendik Støa; Koch, Henrik. (2022) Entanglement coupled cluster theory - Spin-adapted description of doublet systems within a closed-shell coupled cluster framework. American Chemical Society ACS Fall , Chicago 2022-08-21 - 2022-08-25

2019

  • Vitenskapelig foredrag
    Folkestad, Sarai Dery; Koch, Henrik. (2019) Performance of MLCC2 and MLCCSD. NKS Quantum Chemistry Meeting 2019-10-08 - 2019-10-09

2018

  • Vitenskapelig foredrag
    Folkestad, Sarai Dery; Kjønstad, Eirik Fadum; Koch, Henrik. (2018) Efficient Cholesky decomposition algorithms for multilevel methods. Department of Chemistry, Aarhus Universitet Methods and Algorithms in Quantum Chemistry , Aarhus 2018-12-13 - 2018-12-15

2017

  • Poster
    Folkestad, Sarai Dery; Høyvik, Ida-Marie; Koch, Henrik. (2017) Multilevel coupled cluster theory for valence and core excited states. 11th Triennial Congress of the World Association of Theoretical and Computational Chemistry 2017-08-27 - 2017-09-01
  • Intervju
    Koch, Henrik. (2017) A Single Electron's Tiny Leap Sets Off 'Molecular Sunscreen' Response. Newswise.com Newswise.com [Internett] 2017-06-22

2016

  • Poster
    Wolf, Thomas J. A.; Battistoni, Andrea; Berrah, Nora; Bucksbaum, Philip H.; Coffee, Ryan; Coriani, Sonia. (2016) Elucidating the photoprotection mechanism of thymine by transient NEXAFS spectroscopy in the gas phase. Katharine L. Reid Photoionization & Photodetachment Gordon Research Conference , Renaissance Tuscany Il Ciocco Lucca (Barga), Italy 2016-02-07 - 2016-02-12
  • Poster
    Coriani, Sonia; Cukras, Janusz; Myhre, Rolf Heilemann; Koch, Henrik. (2016) Coupled Cluster Studies of Photoionization, Photodetach- ment and X-ray Photoabsorption. Katharine L. Reid Photoionization & Photodetachment Gordon Research Conference , Renaissance Tuscany Il Ciocco Lucca (Barga), Italy 2016-02-07 - 2016-02-12
  • Poster
    Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2016) Implicit and Explicit Solvent Effects on Optical Rotation for Molecules with Internal Hydrogen Bonds. EuCheMS and ANQUE 6th EuCheMs Chemistry Congress , Sevilla 2016-09-11 - 2016-09-15
  • Poster
    Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2016) Optical Rotation Calculations for a Group of Fluorinated Alcohols and Amines. ELSEVIER 17th Tetrahedron Symposium , Sitges-Barcelona 2016-06-28 - 2017-07-01

2015

  • Poster
    Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2015) Optical Rotation Calculations of Fluorinated Alcohols and Amines: The Role of Basis Set Convergence. EuCheMS 10th European Conference on Computational Chemistry (EuCO-CC 2015) , Fulda 2015-08-31 - 2015-09-03
  • Vitenskapelig foredrag
    Haghdani, Shokouh; Hoff, Bård Helge; Koch, Henrik; Åstrand, Per-Olof. (2015) Optical Rotation Calculations of Fluorinated Alcohols and Amines. Norsk Kjemisk Selskap (NKS) Annual Meeting in Quantum and Computational Chemistry , Bergen 2015-06-29 - 2015-06-30

2014

  • Poster
    Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2014) Quantum chemical investigation of sodium diffusion through graphite. Göteborgs Universitet MOLEC 2014, European Conference on the Dynamics of Molecular Systems , Göteborg 2014-08-24 - 2014-08-29
  • Vitenskapelig foredrag
    Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2014) DFT calculations of sodium-PAH van der Waals-complexes. DuraMat Project Meeting , NTNU 2014-10-28 - 2014-10-28
  • Vitenskapelig foredrag
    Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2014) Atomistic simulations in DuraMat. DuraMat Project Meeting , NTNU 2014-05-22 - 2014-05-22
  • Poster
    Skjelbred, Kristin Marie; Myhre, Rolf Heilemann; Koch, Henrik; de Merás, Alfredo Sánchez. (2014) MLCC - Multi Level Coupled Cluster Theory. Norsk kjemisk selskap Norsk kjemisk selskaps landsmøte , Lillestrøm 2014-10-29 - 2014-10-30

2013

  • Poster
    Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2013) Quantum chemical investigations of sodium diffusion through graphite. Centre for Theoretical and Computational Chemistry Very Accurate and Large Computations and Applications , Fevik 2013-06-09 - 2013-06-12
  • Faglig foredrag
    Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2013) Atomic simulations in DuraMat. Elkem Carbon DuraMat group meeting , Kristiansand 2013-09-24 - 2013-09-25
  • Faglig foredrag
    Koch, Henrik. (2013) New aspects in multi-level coupled cluster theory. ICMOL, University of Valencia Invited Presentation , Valencia 2013-07-24 - 2013-07-24
  • Faglig foredrag
    Koch, Henrik. (2013) Second quantization based methods in quantum chemistry I,II,III. Scuola Normale Superiore Invited Presentation , Pisa 2013-01-20 - 2013-01-30
  • Vitenskapelig foredrag
    Koch, Henrik; Myhre, Rolf Heilemann; Hjertenæs, Eirik; Sánchez de Merás, Alfredo. (2013) Multi-level Coupled Cluster Models. CTCC VALCA2013-Very accurate and large computations and applications 2013 , Strand Hotel Fevik, Norway 2013-06-09 - 2013-06-12

2012

  • Vitenskapelig foredrag
    Hjertenæs, Eirik; Andersson, Stefan; Koch, Henrik. (2012) Benchmark data and DFT evaluation for sodium-graphite interactions: DFT in DuraMat. NKS Norwegian Chemical Society - Annual meeting in the computational chemistry , Hamn på Senja 2012-06-12 - 2012-06-13
  • Poster
    Hjertenæs, Eirik; Koch, Henrik. (2012) Non-orthogonal Slater Determinants - NOSD. Aarhus University Sostrup Summer School in Quantum Chemistry and Molecular Properties , Ry 2012-07-01 - 2012-07-13
  • Vitenskapelig foredrag
    Koch, Henrik. (2012) Reduced scaling electronic structure methods using Cholesky decomposition. Prof(Dr) RAMASAMI Ponnadurai Invited talk , University of Mauritius 2012-01-17 - 2012-01-17

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