高温近似下奇异夸克物质的体粘滞系数  

Bulk Viscosity of Strange Quark Matter in High Temperature Approximation

作　　者：杨书华[1] 郑小平[1] 许云[1] 李家荣[1] 

机构地区：[1]华中师范大学物理系,武汉430079

出　　处：《高能物理与核物理》2003年第4期328-331,共4页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金 ( 10 175 0 2 6)资助~~

摘　　要：在准粒子描述下 ,采用自洽的热力学方法 ,考虑奇异夸克物质 (SQM )的介质效应 ,计算了高温近似下奇异夸克物质的体粘滞系数 .发现介质效应对奇异夸克物质的体粘滞系数有很大影响 。Taking medium effects into account, we calculate the bulk viscosity of strange quark matter in high temperature approximation using a consistent thermodynamics method in quasi particle description. We find that medium effects have great influence to the bulk viscosity of strange quark matter, which leads to the result that two flavor superconductivity (2SC) is not excluded by pulsar data, unlike Madsen's result.

关 键 词：高温近似 奇异夸克物质 体粘滞系数 准粒子 奇异星 介质效应 中子星 

分 类 号：O572.33[理学—粒子物理与原子核物理] P145.6[理学—物理]