Charge fluctuations in chiral models and the QCD phase transition
Aug, 2011
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Abstract: (arXiv)
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.Note:
- 4 pages, 3 figures, to appear in the proceedings of Quark Matter 2011, 23-28 May 2011, Annecy, France
- critical phenomena: chiral
- model: chiral
- spontaneous symmetry breaking: chiral
- symmetry: chiral
- quantum chromodynamics: critical phenomena
- density: fluctuation
- charge: fluctuation
- quark: matter
- flavor: 2
- heavy ion: scattering
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