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Non-equilibrium cumulants within model A from crossover to first-order phase transition side
We study the non-equilibrium cumulants of the chiral order parameter field ( σ field) in different phase transition scenarios via Langevin dynamics. Cumulants up to fourth-order have been calculated based on the spacetime-dependent σ configurations from the event-by-event numerical simulations. By l...
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Published in: | The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2023-02, Vol.59 (2), Article 30 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We study the non-equilibrium cumulants of the chiral order parameter field (
σ
field) in different phase transition scenarios via Langevin dynamics. Cumulants up to fourth-order have been calculated based on the spacetime-dependent
σ
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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ISSN: | 1434-601X 1434-601X |
DOI: | 10.1140/epja/s10050-023-00949-1 |