Mean-field approximation for the chiral soliton in a chiral phase transition  

作　　者：张辉 舒崧 

机构地区：[1]Department of Physics and Electronic Science, Hubei University

出　　处：《Chinese Physics C》2015年第9期58-64,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(10905018,11275082)

摘　　要：Using the mean-field approximation, we study the chiral soliton within the linear sigma model in a thermal vacuum. The chiral soliton equations with different boundary conditions are solved at finite temperatures and densities. The solitons are discussed before and after chiral restoration. We find that the system has soliton solutions even after chiral restoration, and that they are very different from those before chiral restoration, which indicates that the quarks are still bound after chiral restoration.Using the mean-field approximation, we study the chiral soliton within the linear sigma model in a thermal vacuum. The chiral soliton equations with different boundary conditions are solved at finite temperatures and densities. The solitons are discussed before and after chiral restoration. We find that the system has soliton solutions even after chiral restoration, and that they are very different from those before chiral restoration, which indicates that the quarks are still bound after chiral restoration.

关 键 词：chiral Lagrangians chiral phase transition chiral soliton bound state finite-temperature field theory 

分 类 号：O572.243[理学—粒子物理与原子核物理]