Multiconfiguration self-consistent field and multireference configuration interaction methods and applications

PG Szalay, T Muller, G Gidofalvi, H Lischka… - Chemical …, 2012 - ACS Publications
The configuration interaction (CI) method is a general procedure to compute approximate
solutions to the electronic Schrödinger equation. The wave function is written as a linear …

Trajectory‐based nonadiabatic dynamics with time‐dependent density functional theory

BFE Curchod, U Rothlisberger, I Tavernelli - ChemPhysChem, 2013 - Wiley Online Library
Understanding the fate of an electronically excited molecule constitutes an important task for
theoretical chemistry, and practical implications range from the interpretation of atto‐and …

Including quantum decoherence in surface hop**

G Granucci, M Persico, A Zoccante - The Journal of Chemical Physics, 2010 - pubs.aip.org
In this paper we set up a method called overlap decoherence correction (ODC) to take into
account the quantum decoherence effect in a surface hop** framework. While kee** the …

Photodynamics in Complex Environments: Ab Initio Multiple Spawning Quantum Mechanical/Molecular Mechanical Dynamics

AM Virshup, C Punwong, TV Pogorelov… - The Journal of …, 2009 - ACS Publications
Our picture of reactions on electronically excited states has evolved considerably in recent
years, due to advances in our understanding of points of degeneracy between different …

Assessment of approximate coupled-cluster and algebraic-diagrammatic-construction methods for ground-and excited-state reaction paths and the conical …

D Tuna, D Lefrancois, Ł Wolański… - Journal of Chemical …, 2015 - ACS Publications
As a minimal model of the chromophore of rhodopsin proteins, the penta-2, 4-dieniminium
cation (PSB3) poses a challenging test system for the assessment of electronic-structure …

Nonadiabatic Deactivation of 9H-Adenine: A Comprehensive Picture Based on Mixed Quantum−Classical Dynamics

M Barbatti, H Lischka - Journal of the American Chemical Society, 2008 - ACS Publications
Mixed quantum− classical dynamics simulations at the multireference configuration
interaction (MR-CIS) level were performed for 9 H-adenine in order to understand its …

Dynamic electron correlation effects on the ground state potential energy surface of a retinal chromophore model

S Gozem, M Huntress, I Schapiro, R Lindh… - Journal of chemical …, 2012 - ACS Publications
The ground state potential energy surface of the retinal chromophore of visual pigments (eg,
bovine rhodopsin) features a low-lying conical intersection surrounded by regions with …

Ultrafast internal conversion pathway and mechanism in 2-(2′-hydroxyphenyl) benzothiazole: a case study for excited-state intramolecular proton transfer systems

M Barbatti, AJA Aquino, H Lischka… - Physical Chemistry …, 2009 - pubs.rsc.org
We study the ultrafast electronic relaxation of the proton transfer compound 2-(2′-
hydroxyphenyl) benzothiazole (HBT) in a joint approach of femtosecond pump–probe …

Optimization of mixed quantum-classical dynamics: Time-derivative coupling terms and selected couplings

J Pittner, H Lischka, M Barbatti - Chemical Physics, 2009 - Elsevier
The usage of time-derivative non-adiabatic coupling terms and partially coupled time-
dependent equations are investigated to accelerate non-adiabatic dynamics simulations at …

Fitting coupled potential energy surfaces for large systems: Method and construction of a 3-state representation for phenol photodissociation in the full 33 internal …

X Zhu, DR Yarkony - The Journal of Chemical Physics, 2014 - pubs.aip.org
A recently reported algorithm for representing adiabatic states coupled by conical
intersections using a quasi-diabatic state Hamiltonian in four and five atom systems is …