摘要
考察了一个在引力场ｇμｖ和ｄｉｌａｔｏｎ场背景下的有限温度玻色弦模型，导出了高亏格黎曼面上能量动量张量满足的对偶关系式；同时，还在四维Ｒｏｂｅｒｔｓｏｎ－Ｗａｌｋｅｒ（Ｒ－Ｗ）度规下证明了弦气体物质作用量的温度对偶不变性，获得了亏格数ｇ＝１和２的弦宇宙学解，并研究了运动方程的温度变换性质．
A Bosonic string model at finite temperature on the gravition g and thedilaton background field is examined. Moreover, the duality relation of energymomentum tensor on high genus Riemann surface is derived. At the same time, thetemperature duality invariance for the action of string gas matter is proved in 4-DRobertson-Walker metric, the string cosmological solutions and tomperature duality ofthe equations of motion for genus g=1 and 2 are also investigated.
出处
《高能物理与核物理》
EI
CSCD
北大核心
1999年第7期655-664,共10页
High Energy Physics and Nuclear Physics
基金
国家教委博士点基金
关键词
黎曼面
温度对偶性
弦宇宙学解
亏格数
Riemann surface, temperature duality, string cosmological solutions
