Electronic structure methods for the description of nonadiabatic effects and conical intersections

S Matsika - Chemical Reviews, 2021 - ACS Publications
Nonadiabatic effects are ubiquitous in photophysics and photochemistry, and therefore,
many theoretical developments have been made to properly describe them. Conical …

Surface hopping dynamics with correlated single-reference methods: 9H-adenine as a case study

F Plasser, R Crespo-Otero, M Pederzoli… - Journal of Chemical …, 2014 - ACS Publications
Surface hopping dynamics methods using the coupled cluster to approximated second order
(CC2), the algebraic diagrammatic construction scheme to second order (ADC (2)), and the …

Polyradical Character of Triangular Non-Kekulé Structures, Zethrenes, p-Quinodimethane-Linked Bisphenalenyl, and the Clar Goblet in Comparison: An Extended …

A Das, T Müller, F Plasser… - The Journal of Physical …, 2016 - ACS Publications
In this work, two different classes of polyaromatic hydrocarbon (PAH) systems have been
investigated in order to characterize the amount of polyradical character and to localize the …

Full implementation and benchmark studies of Mukherjee's state-specific multireference coupled-cluster ansatz

S Das, D Mukherjee, M Kállay - The Journal of chemical physics, 2010 - pubs.aip.org
The state-specific multireference coupled-cluster (SS-MRCC) ansatz developed by
Mukherjee and co-workers [J. Chem. Phys. 110, 6171 (1999)] has been implemented by …

MLatom software ecosystem for surface hopping dynamics in Python with quantum mechanical and machine learning methods

L Zhang, SV Pios, M Martyka, F Ge… - Journal of Chemical …, 2024 - ACS Publications
We present an open-source MLatom@ XACS software ecosystem for on-the-fly surface
hopping nonadiabatic dynamics based on the Landau–Zener–Belyaev–Lebedev algorithm …

Machine learning seams of conical intersection: A characteristic polynomial approach

TY Wang, SP Neville… - The Journal of Physical …, 2023 - ACS Publications
The machine learning of potential energy surfaces (PESs) has undergone rapid progress in
recent years. The vast majority of this work, however, has been focused on the learning of …

Three-state conical intersections in cytosine and pyrimidinone bases

KA Kistler, S Matsika - The Journal of chemical physics, 2008 - pubs.aip.org
Three-state conical intersections have been located and characterized for cytosine and its
analog 5-methyl-2-pyrimidinone using multireference configuration-interaction ab initio …

Automerization reaction of cyclobutadiene and its barrier height: An ab initio benchmark multireference average-quadratic coupled cluster study

M Eckert-Maksić, M Vazdar, M Barbatti… - The Journal of …, 2006 - pubs.aip.org
The problem of the double bond flipping interconversion of the two equivalent ground state
structures of cyclobutadiene (CBD) is addressed at the multireference average-quadratic …

CVRQD ab initio ground-state adiabatic potential energy surfaces for the water molecule

P Barletta, SV Shirin, NF Zobov… - The Journal of …, 2006 - pubs.aip.org
The high accuracy ab initio adiabatic potential energy surfaces (PESs) of the ground
electronic state of the water molecule, determined originally by Polyansky et al [Science 299 …

Three-state trajectory surface hopping studies of the photodissociation dynamics of formaldehyde on ab initio potential energy surfaces

B Fu, BC Shepler, JM Bowman - Journal of the American …, 2011 - ACS Publications
Full-dimensional, three-state, surface hopping calculations of the photodissociation
dynamics of formaldehyde are reported on ab initio potential energy surfaces (PESs) for …