The relationship between Plefka's expansion and the cluster variation method

Muneki Yasuda, Kazuyuki Tanaka

研究成果: Article査読

5 被引用数 (Scopus)

抄録

We expand some approximate free energies in the cluster variation method for random Ising models with respect to exchange interactions, and compare them with the Plefka's expansion. It can be clarified that some approximate free energies in the cluster variation method include all terms relating to specific clusters (or diagrams) in Plefka's expansion. Revealing the relationship between Plefka's expansion and the cluster variation method allows us to understand how the cluster variation method treats correlations among nodes.

本文言語English
論文番号084006
ジャーナルjournal of the physical society of japan
75
8
DOI
出版ステータスPublished - 2006 8 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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