English

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

Nuclear Theory 2023-04-03 v2 High Energy Physics - Phenomenology

Abstract

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 offequilibrium cumulants on the hypothetical freeze-out lines present non-monotonic curves in the large chemical potential region.

Keywords

Cite

@article{arxiv.2112.04667,
  title  = {Non-equilibrium cumulants within model A from crossover to first-order phase transition side},
  author = {Lijia Jiang and Jingyi Chao},
  journal= {arXiv preprint arXiv:2112.04667},
  year   = {2023}
}

Comments

9 pages, 8 figures, more discussions are added, title changed, published in EPJA