Cluster expansion for abstract polymer models
- Cite this article as:
- Kotecký, R. & Preiss, D. Commun.Math. Phys. (1986) 103: 491. doi:10.1007/BF01211762
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A new direct proof of convergence of cluster expansions for polymer (contour) models is given in an abstract setting. It does not rely on Kirkwood-Salsburg type equations or “combinatorics of trees.” A distinctive feature is that, at all steps, the considered clusters contain every polymer at most once.