A perspective on the investigation of spectroscopy and kinetics of complex molecular systems with semiclassical approaches

R Conte, C Aieta, M Cazzaniga… - The Journal of Physical …, 2024 - ACS Publications
In this Perspective we show that semiclassical methods provide a rigorous hierarchical way
to study the vibrational spectroscopy and kinetics of complex molecular systems. The time …

Coherent state based solutions of the time-dependent Schrödinger equation: hierarchy of approximations to the variational principle

M Werther, SL Choudhury… - International Reviews in …, 2021 - Taylor & Francis
In this review, we give a comprehensive comparison of the most widely used coherent state
(CS) based methods to solve the time-dependent Schrödinger equation (TDSE). Starting …

Unraveling Water Solvation Effects with Quantum Mechanics/Molecular Mechanics Semiclassical Vibrational Spectroscopy: The Case of Thymidine

D Moscato, G Mandelli, M Bondanza… - Journal of the …, 2024 - ACS Publications
We introduce a quantum mechanics/molecular mechanics semiclassical method for studying
the solvation process of molecules in water at the nuclear quantum mechanical level with …

On-the-fly ab initio semiclassical evaluation of vibronic spectra at finite temperature

T Begušić, J Vaníček - The Journal of Chemical Physics, 2020 - pubs.aip.org
To compute and analyze vibrationally resolved electronic spectra at zero temperature, we
have recently implemented the on-the-fly ab initio extended thawed Gaussian approximation …

Applicability of the thawed Gaussian wavepacket dynamics to the calculation of vibronic spectra of molecules with double-well potential energy surfaces

T Begusic, E Tapavicza, J Vanicek - Journal of Chemical Theory …, 2022 - ACS Publications
Simulating vibrationally resolved electronic spectra of anharmonic systems, especially those
involving double-well potential energy surfaces, often requires expensive quantum …

[HTML][HTML] On-the-fly ab initio semiclassical evaluation of third-order response functions for two-dimensional electronic spectroscopy

T Begušić, J Vaníček - The Journal of Chemical Physics, 2020 - pubs.aip.org
Ab initio computation of two-dimensional electronic spectra is an expanding field, whose
goal is improving upon simple, few-dimensional models often employed to explain …

A semiclassical framework for mixed quantum classical dynamics

S Malpathak, MS Church, N Ananth - The Journal of Physical …, 2022 - ACS Publications
Semiclassical (SC) approximations for quantum dynamic simulations in complex chemical
systems range from rigorously accurate methods that are computationally expensive to …

[HTML][HTML] Single-hessian thawed gaussian approximation

T Begušić, M Cordova, J Vaníček - The Journal of chemical physics, 2019 - pubs.aip.org
To alleviate the computational cost associated with on-the-fly ab initio semiclassical
calculations of molecular spectra, we propose the single-Hessian thawed Gaussian …

Anharmonicity and quantum nuclear effects in theoretical vibrational spectroscopy: a molecular tale of two cities

R Conte, C Aieta, G Botti, M Cazzaniga… - Theoretical Chemistry …, 2023 - Springer
Anharmonic effects due to the shape of the molecular potential energy surface far from the
equilibrium geometry are major responsible for the deviations of the actual frequencies of …

On-the-fly adiabatically switched semiclassical initial value representation molecular dynamics for vibrational spectroscopy of biomolecules

G Botti, M Ceotto, R Conte - The Journal of Chemical Physics, 2021 - pubs.aip.org
Semiclassical (SC) vibrational spectroscopy is a technique capable of reproducing quantum
effects (such as zero-point energies, quantum resonances, and anharmonic overtones) from …