文章基本信息

标题：The canonical approach to Finite Density QCD
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作者：S. Kratochvila ; P. de-Forcrand
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：We present a canonical approach to study properties of QCD at finite baryon density r, and apply it to the determination of the phase diagram of four-flavour QCD. For a pion mass mp ∼ 350 MeV, the first-order transition between the hadronic and the plasma phase gives rise to a coexistence region in the T-r plane, which we study in detail. We obtain accurate results for systems containing up to 30 baryons and quark chemical potentials m up to 2T. Our T-m phase diagram agrees with the literature when m T .1. At larger chemical potential, we observe a “bending down” of the phase boundary. We characterise the two phases with simple models: the hadron resonance gas in the hadronic phase, the free massless quark gas in the plasma phase.