Non critical holographic models of the thermal phases of QCD

Details Non critical holographic models of the thermal phases of QCD Non critical holographic models of the thermal phases of QCD

2007-11-27

arxiv.org/abs/0711.4273v3

JHEP0806:091,2008

Physics

High Energy Physics

High Energy Physics - Theory

11 figure minor corrections

Scientific paper

10.1088/1126-6708/2008/06/091

We analyze the thermal phases of a non critical holographic model of QCD. The model is based on a six dimensional background of $N_c$ non extremal D4 branes wrapping a spacial circle of radius $R$ and the compactified Euclidean time direction of radius $\beta=1/T$. We place in this background stacks of $N_f$ D4 and anti-D4 flavor probe branes with a separation distance $L$ at large radial direction. %The dual theory is a 4+1 dimensional $SU(N_c)$ gauge theory %compactified on a radius $R$ with anti-periodic boundary conditions for the fermions. The analysis of the DBI effective action yields the following phase diagram: At low temperature the system is in a confining phase with broken chiral symmetry. In the high temperature deconfining phase chiral symmetry can be either restored for $L>L_c=1.06 R$ or broken for $L

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