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Fluctuations and correlations in Polyakov loop extended chiral fluid dynamics

Abstract : We study nonequilibrium effects at the QCD phase transition within the framework of Polyakov loop extended chiral fluid dynamics. The quark degrees of freedom act as a locally equilibrated heat bath for the sigma field and a dynamical Polyakov loop. Their evolution is described by a Langevin equation with dissipation and noise. At a critical point we observe the formation of long-range correlations after equilibration. During a hydrodynamical expansion nonequilibrium fluctuations are enhanced at the first order phase transition compared to the critical point.
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http://hal.in2p3.fr/in2p3-00835862
Contributor : Sylvie Flores <>
Submitted on : Thursday, June 20, 2013 - 7:36:42 AM
Last modification on : Wednesday, January 15, 2020 - 1:30:02 PM

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C. Herold, M. Bleicher, Marlene Nahrgang. Fluctuations and correlations in Polyakov loop extended chiral fluid dynamics. Strangeness in Quark Matter 2011, Sep 2011, Krakow, Poland. pp.529-534, ⟨10.5506/APhysPolBSupp.5.529⟩. ⟨in2p3-00835862⟩

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