Ab initio nonadiabatic dynamics with coupled trajectories: A rigorous approach to quantum (de) coherence

SK Min, F Agostini, I Tavernelli… - The journal of physical …, 2017 - ACS Publications
We report the first nonadiabatic molecular dynamics study based on the exact factorization
of the electron–nuclear wave function. Our approach (a coupled-trajectory mixed quantum …

Surface hop** dynamics beyond nonadiabatic couplings for quantum coherence

JK Ha, IS Lee, SK Min - The journal of physical chemistry letters, 2018 - ACS Publications
Description of correct electron–nuclear couplings is crucial in modeling of nonadiabatic
dynamics. Within traditional semiclassical or mixed quantum–classical dynamics, the …

Hybrid quantum-classical dynamics of pure-dephasing systems

G Manfredi, A Rittaud, C Tronci - Journal of Physics A …, 2023 - iopscience.iop.org
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Nonadiabatic dynamics with coupled trajectories

C Pieroni, F Agostini - Journal of Chemical Theory and …, 2021 - ACS Publications
In this paper, we discuss coupled-trajectory schemes for molecular-dynamics simulations of
excited-state processes. New coupled-trajectory strategies to capture decoherence effects …

[HTML][HTML] Evolution of hybrid quantum–classical wavefunctions

F Gay-Balmaz, C Tronci - Physica D: Nonlinear Phenomena, 2022 - Elsevier
A gauge-invariant wave equation for the dynamics of hybrid quantum–classical systems is
formulated by combining the variational setting of Lagrangian paths in continuum theories …

Generalized quasiharmonic approximation via space group irreducible derivatives

MA Mathis, A Khanolkar, L Fu, MS Bryan, CA Dennett… - Physical Review B, 2022 - APS
The quasiharmonic approximation (QHA) is the simplest nontrivial approximation for
interacting phonons under constant pressure, bringing the effects of anharmonicity into …

Koopmon Trajectories in Nonadiabatic Quantum-Classical Dynamics

W Bauer, P Bergold, F Gay-Balmaz, C Tronci - Multiscale Modeling & …, 2024 - SIAM
In order to alleviate the computational costs of fully quantum nonadiabatic dynamics, we
present a mixed quantum-classical (MQC) particle method based on the theory of Koopman …

Effective nonlinear Ehrenfest hybrid quantum-classical dynamics

JL Alonso, C Bouthelier-Madre… - The European Physical …, 2023 - Springer
The definition of a consistent evolution equation for statistical hybrid quantum-classical
systems is still an open problem. In this paper, we analyze the case of Ehrenfest dynamics …

Improving application performance with biased distributions of quantum states

S Lohani, JM Lukens, DE Jones, TA Searles… - Physical Review …, 2021 - APS
We consider the properties of a specific distribution of mixed quantum states of arbitrary
dimension that can be biased towards a specific mean purity. In particular, we analyze …

First-principles quantum and quantum-classical simulations of exciton diffusion in semiconducting polymer chains at finite temperature

R Hegger, R Binder, I Burghardt - Journal of Chemical Theory and …, 2020 - ACS Publications
We report on first-principles quantum-dynamical and quantum-classical simulations of
photoinduced exciton dynamics in oligothiophene chain segments, representative of …