Holographic chiral phase transition with chemical potential
Abstract
We discuss the Sakai-Sugimoto model at finite temperature and finite chemical potential. It is a holographic model of large N_c QCD with N_f massless quarks based on a D4/D8-\bar{D8} brane system. The near horizon limit of the D4-branes and the probe approximation of the D8-\bar{D8} pairs allow us to treat the D4-branes as a gravitational background and the D8-\bar{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-\bar{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.
Keywords
Cite
@article{arxiv.hep-th/0608198,
title = {Holographic chiral phase transition with chemical potential},
author = {N. Horigome and Y. Tanii},
journal= {arXiv preprint arXiv:hep-th/0608198},
year = {2010}
}
Comments
18 pages with 6 figures, a reference added, discussions on gauge fields are corrected, no qualitative change in the main result