Title: A systematic formulation of the virial expansion for nonadditive interaction potentials
Authors: Hellmann, Robert 
Bich, Eckard
Language: eng
Issue Date: 28-Aug-2011
Document Type: Article
Journal / Series / Working Paper (HSU): The journal of chemical physics : JCP
Volume: 135
Issue: 8
A new formulation of the virial expansion for a classical gas is derived without the restriction to pairwise-additive interaction potentials. Explicit expressions up to the eighth virial coefficient, suitable for numerical evaluation, are given in the form of integrals over sums of cluster diagrams. Compared with previous approaches, the number of cluster diagrams increases more moderately with increasing order of the virial coefficient. Thus, the new formulation should be particularly useful for the computation of high-order virial coefficients.
Organization Units (connected with the publication): Universit├Ąt Rostock
ISSN: 00219606
Publisher DOI: 10.1063/1.3626524
Appears in Collections:Publications of the HSU Researchers (before HSU)

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