Chiral criticality and glue dynamics  

作　　者：Wei-Jie Fu 付伟杰(School of Physics, Dalian University of Technology)

机构地区：[1]School of Physics, Dalian University of Technology

出　　处：《Chinese Physics C》2019年第7期31-36,共6页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11775041)

摘　　要：The chiral order-parameter σ field and its higher-order cumulants of fluctuations are calculated within the functional renormalization group approach by adopting the local potential approximation in this study. The influence of glue dynamics on fluctuations of the σ field is investigated, and we find that they are weakly affected. This is in sharp contrast to the baryon number fluctuations, which are sensitive to the glue dynamics and involve information on the color confinement. The implications of our calculated results are discussed from the viewpoint of the theoretical and experimental efforts in the search for the QCD critical end point.The chiral order-parameter σ field and its higher-order cumulants of fluctuations are calculated within the functional renormalization group approach by adopting the local potential approximation in this study. The influence of glue dynamics on fluctuations of the σ field is investigated, and we find that they are weakly affected. This is in sharp contrast to the baryon number fluctuations, which are sensitive to the glue dynamics and involve information on the color confinement. The implications of our calculated results are discussed from the viewpoint of the theoretical and experimental efforts in the search for the QCD critical end point.

关 键 词：CHIRAL SYMMETRIES RENORMALIZATION group methods QUARK-GLUON plasma color confinement 

分 类 号：O4[理学—物理]