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arXiv · 1301.1271

Fluctuations and correlations in Polyakov loop extended chiral fluid dynamics

Christoph Herold·Marcus Bleicher·Marlene Nahrgang
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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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Christoph Herold, Marcus Bleicher, Marlene Nahrgang. 2013-01-07. Fluctuations and correlations in Polyakov loop extended chiral fluid dynamics. https://doi.org/10.5506/aphyspolbsupp.5.529

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