Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

Four methods to compute the dielectric permittivity ε of a liquid from molecular simulations are compared in the context of the simple point charge (SPC) water model. In the first method (unrestrained method), ε is evaluated from the fluctuations of the box dipole moment M, monitored during a single equilibrium simulation. In the three other methods, ε is evaluated from the probability distribution p(M) of the dipole moment norm. This distribution is itself evaluated in three different ways: (i) from multiple simulations involving a M-dependent biasing potential (umbrella-sampling method), (ii) from multiple simulations involving a constrained dipole moment norm (M-constraint method), or (iii) from fitting of incomplete p(M) estimates to a Maxwell distribution (fitting method). The four methods are shown to converge to an identical estimate of ε=61±1 for SPC water (256 molecules, reaction-field electrostatics). The convergence properties, advantages, and drawbacks of the different methods are analyzed in detail.

Bibliography

Heinz, T. N., van Gunsteren, W. F., & Hünenberger, P. H. (2001). Comparison of four methods to compute the dielectric permittivity of liquids from molecular dynamics simulations. The Journal of Chemical Physics, 115(3), 1125–1136.

Authors 3
  1. Tim N. Heinz (first)
  2. Wilfred F. van Gunsteren (additional)
  3. Philippe H. Hünenberger (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 9:26 a.m.)
Deposited 1 year, 6 months ago (Feb. 6, 2024, 1:24 a.m.)
Indexed 3 weeks, 5 days ago (Aug. 6, 2025, 8:28 a.m.)
Issued 24 years, 1 month ago (July 15, 2001)
Published 24 years, 1 month ago (July 15, 2001)
Published Print 24 years, 1 month ago (July 15, 2001)
Funders 0

None

@article{Heinz_2001, title={Comparison of four methods to compute the dielectric permittivity of liquids from molecular dynamics simulations}, volume={115}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1379764}, DOI={10.1063/1.1379764}, number={3}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Heinz, Tim N. and van Gunsteren, Wilfred F. and Hünenberger, Philippe H.}, year={2001}, month=jul, pages={1125–1136} }