Convex-envelope formulation for separable many-particle interactions |
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| Authors: | J.H.H. Perk H.W. Capel L.W.J. den Ouden |
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| Affiliation: | Instituut-Lorentz voor Theoretische Natuurkunde, Rijksuniversiteit Leiden, Leiden, The Netherlands |
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| Abstract: | The exact result for the free energy per particle in systems described by a hamiltonian of the type NP(VN), where NVN denotes a set of short-range operators, is reformulated in terms of a convex-envelope construction. A comparison is given with results obtained for classical systems with interactions of the so-called Kac-type. |
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