05-72 Daniel Ueltschi

Cluster Expansions and Correlation Functions (67K, latex2e + eps figures) Feb 17, 05

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Abstract. A cluster expansion is proposed, that applies to both continuous and discrete systems. The assumption for its convergence involves an extension of the neat Koteck -Preiss criterion. Expressions and estimates for correlation functions are also presented. The results are applied to systems of interacting classical and quantum particles, and to a lattice polymer model.

Files: 05-72.src( 05-72.comments , 05-72.keywords , clexp.tex , figcluster.eps , figcluster2.eps )