Random-cluster dynamics in Z2

• 成果类型: Article
• 署名作者: Blanca, Antonio; Sinclair, Alistair
• 署名单位: University of California System; University of California Berkeley
• 刊物名称: PROBABILITY THEORY AND RELATED FIELDS
• ISSN/ISSBN: 0178-8051
• DOI: 10.1007/s00440-016-0725-1
• 发表日期: 2017
• 页码: 821-847
• 关键词: lattice spin systems; swendsen-wang; MODEL; graphs; REPRESENTATION

摘要

The random-cluster model has been widely studied as a unifying framework for random graphs, spin systems and electrical networks, but its dynamics have so far largely resisted analysis. In this paper we analyze the Glauber dynamics of the random-cluster model in the canonical case where the underlying graph is an box in the Cartesian lattice . Our main result is a upper bound for the mixing time at all values of the model parameter p except the critical point , and for all values of the second model parameter . We also provide a matching lower bound proving that our result is tight. Our analysis takes as its starting point the recent breakthrough by Beffara and Duminil-Copin on the location of the random-cluster phase transition in . It is reminiscent of similar results for spin systems such as the Ising and Potts models, but requires the reworking of several standard tools in the context of the random-cluster model, which is not a spin system in the usual sense.