Universal scaling of conserved charge in stochastic diffusion dynamics

作     者：Shanjin Wu Huichao Song 吴善进;宋慧超

作者机构：Department of Physics and State Key Laboratory of Nuclear Physics and TechnologyPeking UniversityBeijing 100871China Collaborative Innovation Center of Quantum MatterBeijing 100871China Center for High Energy PhysicsPeking UniversityBeijing 100871China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2019年第43卷第8期

页      面：109-116页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Supported by the NSFC and the MOST(11675004 11435001 2015CB856900) 

主　　题：critical point QGP relativistic heavy-ion collisions 

摘      要：We explore the Kibble-Zurek scaling of conserved charge using stochastic diffusion dynamics. The characteristic scales τKZ and lKZ are determined and used to properly rescale the traditional correlation function and cumulant. We construct universal functions for the two-point correlation C(y1-y2;τ)and the second-order cumulant K(△y,τ) of the conserved charge in the critical regime, both of which are, near the critical point, insensitive to both the initial temperature and a parameter in the mapping between the 3D Ising model and the hot QCD system.