The cluster variation method and the method of the reducibility of density matrices

Shigetoshi Katsura and Ryoichi Kikuchi

Physica A: Statistical Mechanics and its Applications, 1984, vol. 123, issue 2, 595-604

Abstract: Using the Ising model in the ferromagnetic case in the pair and the tetrahedron approximations as examples, the equivalence between the cluster variation method and the method of the reducibility of density matrices is demonstrated.

Date: 1984
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:123:y:1984:i:2:p:595-604

DOI: 10.1016/0378-4371(84)90175-4

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