文章基本信息

标题：Critical behavior of the compact 3D U(1) gauge theory at finite temperature
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作者：O. Borisenko ; R. Fiore ; M. Gravina 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2010
卷号：2010
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Critical properties of the compact three-dimensional U(1) lattice gauge theory are explored at finite temperatures. The critical point of the deconfinement phase transition, critical indices and the string tension are studied numerically on lattices with temporal extension Nt = 8 and spatial extension ranging from L = 32 to L = 256. The critical indices, which govern the behaviour across the deconfinement phase transition, are generally expected to coincide with the critical indices of the two-dimensional XY model. It is found that the determination of the infinite volume critical point differs from the pseudo-critical coupling at L =32, found earlier in the literature and implicitly assumed as the onset value of the deconfined phase. The critical indexn computed from the scaling of the pseudocritical couplings agrees well with the value n = 1/2 of the XY model. The computation of the index h brings to a value larger than expected. The possible reasons for such behaviour are discussed.