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arXiv · 1304.5372

Formation of droplets with high baryon density at the QCD phase transition in expanding matter

Christoph Herold·Marlene Nahrgang·Igor Mishustin·Marcus Bleicher
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Abstract

We consider the (3+1) dimensional expansion and cooling of the chirally-restored and deconfined matter at finite net-baryon densities as expected in heavy-ion collisions at moderate energies. In our approach, we consider chiral fields and the Polyakov loop as dynamical variables coupled to a medium represented by a quark-antiquark fluid. The interaction between the fields and the fluid leads to dissipation and noise, which in turn affect the field fluctuations. We demonstrate how inhomogeneities in the net-baryon density may form during an evolution through the spinodal region of the first-order phase transition. For comparison, the dynamics of transition through the crossover and critical end point is also considered.

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Christoph Herold, Marlene Nahrgang, Igor Mishustin, Marcus Bleicher. 2014-07-22. Formation of droplets with high baryon density at the QCD phase transition in expanding matter. https://doi.org/10.1016/j.nuclphysa.2014.01.010

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