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Mass density fluctuations in quantum and classical descriptions of liquid water.

Mass density fluctuations in quantum and classical descriptions of liquid water.

Authors :
Galib M
Duignan TT
Misteli Y
Baer MD
Schenter GK
Hutter J
Mundy CJ
Source :
The Journal of chemical physics [J Chem Phys] 2017 Jun 28; Vol. 146 (24), pp. 244501.
Publication Year :
2017

Abstract

First principles molecular dynamics simulation protocol is established using revised functional of Perdew-Burke-Ernzerhof (revPBE) in conjunction with Grimme's third generation of dispersion (D3) correction to describe the properties of water at ambient conditions. This study also demonstrates the consistency of the structure of water across both isobaric (NpT) and isothermal (NVT) ensembles. Going beyond the standard structural benchmarks for liquid water, we compute properties that are connected to both local structure and mass density fluctuations that are related to concepts of solvation and hydrophobicity. We directly compare our revPBE results to the Becke-Lee-Yang-Parr (BLYP) plus Grimme dispersion corrections (D2) and both the empirical fixed charged model (SPC/E) and many body interaction potential model (MB-pol) to further our understanding of how the computed properties herein depend on the form of the interaction potential.

Details

Language :
English
ISSN :
1089-7690
Volume :
146
Issue :
24
Database :
MEDLINE
Journal :
The Journal of chemical physics
Publication Type :
Academic Journal
Accession number :
28668048
Full Text :
https://doi.org/10.1063/1.4986284