Charge fluctuations in chiral models and the QCD phase transition

Details Charge fluctuations in chiral models and the QCD phase transition Charge fluctuations in chiral models and the QCD phase transition

2011-08-05

arxiv.org/abs/1108.1300v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures, to appear in the proceedings of Quark Matter 2011, 23-28 May 2011, Annecy, France

Scientific paper

We consider the Polyakov loop-extended two flavor chiral quark--meson model and discuss critical phenomena related with the spontaneous breaking of the chiral symmetry. The model is explored beyond the mean-field approximation in the framework of the functional renormalisation group. We discuss properties of the net-quark number density fluctuations as well as their higher cumulants. We show that with the increasing net-quark number density, the higher order cumulants exhibit a strong sensitivity to the chiral crossover transition. We discuss their role as probes of the chiral phase transition in heavy-ion collisions at RHIC and LHC.

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