Critical fluctuations in a dynamically expanding heavy-ion collision

Masakiyo Kitazawa; Grégoire Pihan; Nathan Touroux; Marcus Bluhm; Marlene Nahrgang

doi:10.1016/j.nuclphysa.2020.121797

paper

Critical fluctuations in a dynamically expanding heavy-ion collision

arXiv:2002.07322 · doi:10.1016/j.nuclphysa.2020.121797

Abstract

For the discovery of the QCD critical point it is crucial to develop dynamical models of the fluctuations of the net-baryon number that can be embedded in simulations of heavy-ion collisions. In this proceeding, we study the dynamical formation of the critical fluctuations of the net-baryon number near the QCD critical point and their survival in the late stages in an expanding system. The stochastic diffusion equation with a non-linear free energy functional is employed for describing the evolution of conserved-charge fluctuations along trajectories in the crossover and first-order transition regions near the QCD critical point.

4 pages 5 figures, contribution to the proceedings of XXVIIIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)