On the convergence of Green's entropy expansion

István Borzsák, A. Baranyai

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We tested the convergence of Green's entropy expansion for hard sphere systems of different dimensions (D = 1, 2, 3). We compared the two-body and (for D= 1 and 3) the sum of the two-body and three-body entropy contributions to the total excess entropy in these systems. The qualitative properties of the expansion are very similar for the three tested models. The two-body contribution gives a good estimate of the excess entropy at low densities but underestimates the absolute value of the excess entropy at intermediate densities. In this region the inclusion of the three-body entropy contribution improves the accuracy of the expansion. Close to the phase transition density (in D= 2,3) the two-body entropy - due to fortuitous cancellations - is again a good approximation of the excess entropy.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalChemical Physics
Volume165
Issue number2-3
DOIs
Publication statusPublished - Sep 15 1992

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Entropy
entropy
expansion
cancellation
Phase transitions
inclusions
estimates
approximation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

On the convergence of Green's entropy expansion. / Borzsák, István; Baranyai, A.

In: Chemical Physics, Vol. 165, No. 2-3, 15.09.1992, p. 227-230.

Research output: Contribution to journalArticle

Borzsák, István ; Baranyai, A. / On the convergence of Green's entropy expansion. In: Chemical Physics. 1992 ; Vol. 165, No. 2-3. pp. 227-230.
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