Gluon Condensate at finite temperature and density in holographic QCD

Abstract

The lowest dimensional gluon condensate $G_2$ is analysed at finite temperature and chemical potential using a bottom/up holographic model of QCD. Starting from the free energy of the model, pressure, entropy and quark density are obtained. Moreover, at zero chemical potential, the temporal and spatial Wilson loops at low temperature are computed; they are related to the (chromo-)electric and magnetic components of $G_2$, respectively.

Comments: 8 pages, 5 figures, Contribution to the conference QCD@Work 2014, 16-19 June 2014, Giovinazzo (Bari, Italy)