Electronic Resource
Springer
Journal of statistical physics
27 (1982), S. 389-405
ISSN:
1572-9613
Keywords:
Molecular dynamics
;
transport coefficients
;
viscosity
;
time correlation functions
;
long-time tails
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract A discrete formulation of hydrodynamics was recently introduced, whose most important feature is that it is exactly renormalizable. Previous numerical work has found that it provides a more efficient and rapidly convergent method for calculating transport coefficients than the usual Green-Kubo method. The latter's convergence difficulties are due to the well-known “long-time tail” of the time correlation function which must be integrated over time. The purpose of the present paper is to present additional evidence that these difficulties are really absent in the discrete equation of motion approach. The “memory” terms in the equation of motion are calculated accurately, and shown to decay much more rapidly with time than the equilibrium time correlations do.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01008945
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