有限密度下QGP相变的演化图象  

The QGP evolution phase transition scenario in finite density

作　　者：程鸾[1] 王恩科[2] 

机构地区：[1]华中师范大学物理系,武汉430079 [2]华中师范大学粒子物理研究所,武汉430079

出　　处：《华中师范大学学报（自然科学版）》2002年第1期35-38,共4页Journal of Central China Normal University：Natural Sciences

基　　金：国家自然科学基金资助项目 (1992 85 11;1994 5 0 0 1)

摘　　要：在流体力学模型的基础上 ,利用袋模型分析了在零温有限密度极限下从夸克胶子等离子体 (QGP)到强子气体 (HG)的一级相变的演化图象 .引入QGP所占系统体积的份额描述在有一级相变发生时QGP的强子化剩余率 .结果表明强子化剩余率随固有时的增加从 1(完全QGP相 )逐渐减小到 0 (完全强子相 ) .给出了在QGP相。On the basis of the hydrodynamical model, we uses bag model to analyze the scenario of the first order phase transition from quark gluon plasma in the limit of low temperature and high density to the hardronic gas.It describes the remaining ratio of QGP in the hardronization by using the QGP volume rate to the system,which shows that the remaining ratio of QGP in the hardronization evolves from 1 (pure QGP phase) to 0 (pure HHG phase) with proper time increasing.Finally,it get the energy density and the chemical potential evolution which has relation to the proper time in pure QGP phase, the mixed phase and the pure HHG phase.

关 键 词：夸克胶子等离子体 流体力学模型 相变 强子气体 演化图像 有限密度 强子化剩余率 

分 类 号：O572.243[理学—粒子物理与原子核物理]