文章基本信息

标题：The chiral transition in two-flavor QCD
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作者：M. D'Elia ; A.D. Giacomo ; C. Pica 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2005
卷号：2005
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：QCD with Nf =2 is a specially interesting system to investigate the chiral transition. The order of the transition has still not been established. We report the results of an in-depth numerical investigation performed with staggered fermions on lattices with Lt=4 and Ls=12,16,20,24,32 and quark masses amq ranging from 0.01335 to 0.307036. Using finite-size techniques we compare the scaling behavior of a number of thermodynamical susceptibilities with the expectations of O(4) and O(2) universality classes. Clear disagreement is observed. Indications of a first order transition are found. Preliminary reports of this work were presented at past Lattice conferences.