Quark Number Susceptibility around the Chiral Critical End Point  

作　　者：蒋宇 侯丰尧 罗翠柏 宗红石 

机构地区：[1]Center for Statistical and Theoretical Condensed Matter Physics,Zhejiang Normal University [2]State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences [3]Department of Physics,Nanjing University [4]Joint Center for Particle

出　　处：《Chinese Physics Letters》2015年第2期39-42,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11105122,11275097 and 11475085;the Foundation of Graduate School of Nanjing University under Grant No 2014CL02

摘　　要：We calculate the quark number susceptibility （QNS） around the chiral critical end point （CEP）. The CEP is found to be located at （μc,Tc）= （80 MeV, 148 MeV） where μc and Tc are the critical chemical potential and temperature, respectively. The QNS is found to have the highest and sharpest peak at the CEP. It is also found that, when the chemical potential μ is in the range of 60MeV≤ μ ≤ 110MeV, the QNS near the transition temperature is larger than the free field result, which indicates that the space-like damping mode dominates the degree of freedom of motion near the CEP.We calculate the quark number susceptibility （QNS） around the chiral critical end point （CEP）. The CEP is found to be located at （μc,Tc）= （80 MeV, 148 MeV） where μc and Tc are the critical chemical potential and temperature, respectively. The QNS is found to have the highest and sharpest peak at the CEP. It is also found that, when the chemical potential μ is in the range of 60MeV≤ μ ≤ 110MeV, the QNS near the transition temperature is larger than the free field result, which indicates that the space-like damping mode dominates the degree of freedom of motion near the CEP.

关 键 词：CEP QCD Quark Number Susceptibility around the Chiral Critical End Point 

分 类 号：O572.33[理学—粒子物理与原子核物理]