【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．更多还原

【Abstract】 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.更多还原