手征孤子模型的有限温度孤子解与相变  

Soliton Solutions in the Chiral Soliton Model at Finite Temperature and Chiral Phase Transition

作　　者：邓胜华[1] 

机构地区：[1]江汉石油学院基础课部

出　　处：《江汉石油学院学报》1994年第2期106-109,共4页Journal of Jianghan Petroleum Institute

基　　金：国家自然科学基金

摘　　要：将建立在夸克层次上的零温手征孤子模型推广到有限温度情形，利用平均场近似导出了该模型在有限温度的场方程组，并用数值计算方法求出了场方程在不同温度下的孤子解，进而考察和分析了手征孤子模型的特征随温度的变化规律。结果表明，在温度足够高时，描述强相互作用束缚态的手征孤子消失，系统的手征对称性相应得到恢复。The chiral soliton model on quark level is generalized from zero to finitetemperature.The field equations of the model at finite temperature are derived by makinguse of a mean - field approximation. The behavior of the model at finite temperature isinvestigated with calculating the soliton solutions to the field equations. It turns out thatat enough high temperature the chiral solitons being used to describe strong bound statedisappear, and the chiral symmetry of the system is restored simultaneously.

关 键 词：手征对策性 孤子模型 量子力学 

分 类 号：O572.2[理学—粒子物理与原子核物理]