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Volume 347 - Corfu Summer Institute 2018 "School and Workshops on Elementary Particle Physics and Gravity" (CORFU2018) - Session: The Critical Point and Onset of Deconfinement Conference
Production of Entropy at the Chiral Phase Transition from Dissipation and Noise
A. Kittiratpattana, A. Limphirat, C. Herold*
*corresponding author
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Published on: 2019 September 19
Several ongoing theoretical and experimental projects are exploring the possibility of a QCD critical point and phase transition. Here, we propose to study the production of entropy as a signature for a first-order chiral phase transition. Based on the linear sigma model, we couple the order parameter sigma to a quark fluid to describe the nonequilibrium cooling of the fireball in a heavy-ion collision. We estimate the relative increase in entropy per baryon number S/N to reach its largest value of up to 130% for a first-order phase transition at low beam energies. The lifetime of the quark-gluon plasma (QGP) at different types of transition is also investigated.
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