Dynamical fluctuations in critical regime and across the 1st order phase transition

Abstract

In this proceeding, we study the dynamical evolution of the sigma field within the framework of Langevin dynamics. We find that, as the system evolves in the critical regime, the magnitudes and signs of the cumulants of sigma field, $C_3$ and $C_4$, can be dramatically different from the equilibrated ones due to the memory effects near $T_c$. For the dynamical evolution across the 1st order phase transition boundary, the supercooling effect leads the sigma field to be widely distributed in the thermodynamical potential, which largely enhances the cumulants $C_3,C_4$, correspondingly.

arXiv comment4 pages, 2 figures, proceedings for Quark Matter 2017

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Cited by in corpus (14)

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• Universal scaling of the sigma field and net-protons from Langevin dynamics of model A
• Causal hydrodynamic fluctuations in non-static and inhomogeneous backgrounds
• Universal scaling of conserved charge in the stochastic diffusion dynamics
• Enhancements of high order cumulants across the 1st order phase transition boundary
• Dynamical critical fluctuations near the QCD critical point with hydrodynamic cooling rate
• Nonuniform-temperature effects on the phase transition in an Ising-like model
• Non-equilibrium cumulants within model A from crossover to first-order phase transition side
• The equilibrium and dynamical cumulants of QCD chiral order parameter with parametric Landau free energy
• Dynamical and finite-size effects on the criterion of first-order phase transition
• Learning Langevin dynamics with QCD phase transition