Non-equilibrium cumulants within model A from crossover to first-order phase transition side

被引:3
|
作者
Jiang, Lijia [1 ]
Chao, Jingyi [2 ]
机构
[1] Northwest Univ, Inst Modern Phys, Xian 710127, Peoples R China
[2] Jiangxi Normal Univ, Coll Phys & Commun Elect, Nanchang 330022, Peoples R China
来源
EUROPEAN PHYSICAL JOURNAL A | 2023年 / 59卷 / 02期
关键词
LIGHT-NUCLEI PRODUCTION; CRITICAL FLUCTUATIONS; QCD;
D O I
10.1140/epja/s10050-023-00949-1
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We study the non-equilibrium cumulants of the chiral order parameter field (sigma field) in different phase transition scenarios via Langevin dynamics. Cumulants up to fourth-order have been calculated based on the spacetimedependent sigma configurations from the event-by-event numerical simulations. By limiting the cooling of the system in a Hubble-like way, the out-of-equilibrium cumulants illustrate clear memory effects during the evolution. Both the signs and the magnitudes of the high-order cumulants differ from the equilibrium ones below the phase transition temperature. Especially, the dynamical cumulants grow more intensively from the first-order phase transition side than they do from the crossover side. In addition, analysis of the high-order off equilibrium cumulants on the hypothetical freeze-out lines present non-monotonic curves in the large chemical potential region.
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页数:10
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