The QCD phase diagram at nonzero quark density

Details The QCD phase diagram at nonzero quark density The QCD phase diagram at nonzero quark density

2011-02-07

arxiv.org/abs/1102.1356v1

JHEP 1104:001,2011

Physics

High Energy Physics

High Energy Physics - Lattice

12 pages, 6 figures

Scientific paper

10.1007/JHEP04(2011)001

We determine the phase diagram of QCD on the \mu-T plane for small to moderate chemical potentials. Two transition lines are defined with two quantities, the chiral condensate and the strange quark number susceptibility. The calculations are carried out on N_t =6,8 and 10 lattices generated with a Symanzik improved gauge and stout-link improved 2+1 flavor staggered fermion action using physical quark masses. After carrying out the continuum extrapolation we find that both quantities result in a similar curvature of the transition line. Furthermore, our results indicate that in leading order the width of the transition region remains essentially the same as the chemical potential is increased.

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