A tree formula for use in cluster expansions with general multibody interactions |
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| Authors: | Andreas Pordt |
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| Institution: | 1. II. Institut für Theoretische Physik, Universit?t, D-2000, Hamburg 50, Federal Republic of Germany
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| Abstract: | In applications of statistical mechanics and quantum field theory one requires a formula for the activitiesA(P) that are determined by partition functions of a polymer system of the formZ(X)=expE(X). A simple general formula is given which generalizes the tree formula of Glimm, Jaffe, Spencer, Brydges and Federbush. |
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