文章基本信息

标题：Critical behaviour of 3D U(1) LGT at finite temperature
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作者：O. Borisenko
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2007
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The three-dimensional compact U(1) LGT is studied at finite temperature. In particular, correlation functions of the Polyakov loops and the ’t Hooft operator are computed perturbatively at high temperatures. Performing dimensional reduction the effective two-dimensional model is obtained which describes vortex–anti-vortex dynamics in the high-temperature regime. We explore this effective model to study in details the critical behaviour which is expected to be of the BKT type. Under the standard assumptions we compute critical indices and compare them with those of the two-dimensional XY model.