Document Detail


A diagrammatic formulation of the kinetic theory of fluctuations in equilibrium classical fluids. IV. The short time behavior of the memory function.
MedLine Citation:
PMID:  15260665     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Using a recently developed diagrammatic formulation of the kinetic theory of fluctuations in liquids, we investigate the short time behavior of the memory function for density fluctuations in a classical atomic fluid. At short times, the memory function has a large contribution that is generated by the repulsive part of the interatomic potential. We introduce a small parameter that is a measure of the softness of the repulsive part of the potential. The diagrams in the memory function that contribute to lowest order in that small parameter are identified and summed to give an explicit expression for the dominant contribution to the memory function at short times. The result leads to a theory for fluids with continuous potentials that is similar to the Enskog theory for hard sphere fluids.
Authors:
Madhav Ranganathan; Hans C Andersen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  121     ISSN:  0021-9606     ISO Abbreviation:  J Chem Phys     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-07-20     Completed Date:  2007-01-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1243-57     Citation Subset:  -    
Copyright Information:
(c) 2004 American Institute of Physics
Affiliation:
Department of Chemistry, Stanford University, Stanford, California 94305, USA.
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