New phase space formulations and quantum dynamics approaches

X He, B Wu, Y Shang, B Li, X Cheng… - Wiley Interdisciplinary …, 2022 - Wiley Online Library
We report recent progress on the phase space formulation of quantum mechanics with
coordinate‐momentum variables, focusing more on new theory of (weighted) constraint …

[PDF][PDF] Amber 10

DA Case, TA Darden, TE Cheatham, CL Simmerling… - 2008 - infoscience.epfl.ch
Amber is the collective name for a suite of programs that allow users to carry out molecular
dynamics simulations, particularly on biomolecules. None of the individual programs carries …

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 …

The properties of water: Insights from quantum simulations

F Paesani, GA Voth - The Journal of Physical Chemistry B, 2009 - ACS Publications
The properties of water play a central role in many phenomena of relevance to different
areas of science, including physics, chemistry, biology, geology, and climate research …

Comparison of path integral molecular dynamics methods for the infrared absorption spectrum of liquid water

S Habershon, GS Fanourgakis… - The Journal of chemical …, 2008 - pubs.aip.org
The ring polymer molecular dynamics (RPMD) and partially adiabatic centroid molecular
dynamics (PA-CMD) methods are compared and contrasted in an application to the infrared …

Zero point energy leakage in condensed phase dynamics: An assessment of quantum simulation methods for liquid water

S Habershon, DE Manolopoulos - The Journal of chemical physics, 2009 - pubs.aip.org
The approximate quantum mechanical ring polymer molecular dynamics (RPMD) and
linearized semiclassical initial value representation (LSC-IVR) methods are compared and …

Semiclassical “Divide-and-Conquer” method for spectroscopic calculations of high dimensional molecular systems

M Ceotto, G Di Liberto, R Conte - Physical Review Letters, 2017 - APS
A new semiclassical “divide-and-conquer” method is presented with the aim of
demonstrating that quantum dynamics simulations of high dimensional molecular systems …

On-the-fly ab initio semiclassical calculation of glycine vibrational spectrum

F Gabas, R Conte, M Ceotto - Journal of chemical theory and …, 2017 - ACS Publications
We present an on-the-fly ab initio semiclassical study of vibrational energy levels of glycine,
calculated by Fourier transform of the wavepacket correlation function. It is based on a …

A comparative study of the centroid and ring-polymer molecular dynamics methods for approximating quantum time correlation functions from path integrals

A Pérez, ME Tuckerman, MH Müser - The Journal of chemical physics, 2009 - pubs.aip.org
The problems of ergodicity and internal consistency in the centroid and ring-polymer
molecular dynamics methods are addressed in the context of a comparative study of the two …

Multiple coherent states for first-principles semiclassical initial value representation molecular dynamics

M Ceotto, S Atahan, GF Tantardini… - The Journal of chemical …, 2009 - pubs.aip.org
A multiple coherent states implementation of the semiclassical approximation is introduced
and employed to obtain the power spectra with a few classical trajectories. The method is …