Holographic chiral phase transition with chemical potential

被引：121

作者：

Horigome, Norio ^{[1
]}

Tanii, Yoshiaki ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Div Mat Sci, Saitama 3388570, Japan

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 01期

关键词：

gauge-gravity correspondence; brane dynamics in gauge theories; AdS-CFT correspondence;

D O I：

10.1088/1126-6708/2007/01/072

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We discuss the Sakai-Sugimoto model at finite temperature and finite chemical potential. It is a holographic model of large Nc QCD with N-f massless quarks based on a D4/D8-D8 brane system. The near horizon limit of the D4-branes and the probe approximation of the D8-D8 pairs allow us to treat the D4-branes as a gravitational background and the D8-D8 pairs as a probe which does not affect the background. We propose that the asymptotic value of a U(1) gauge field on the D8-D8-branes is identified with the chemical potential for the baryon number. Using this chemical potential we analyze the phase structure of this model and find a chiral symmetry phase transition of the first order.

引用

页数：15

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