谐振势阱中旋转广义玻色系统的热力学性质  

Thermodynamic Properties of a Rotating Generalized Bose System in a Harmonic Trap

作　　者：张楠[1] 孙帅 李玉山 ZHANG Nan;SUN Shuai;LI Yushan(College of Information Engineering,Tianjin Bohai Vocational Technica l College,Tianjin 300402;School of Physics and Electronic Engineering,Heze University,Heze 274015,China)

机构地区：[1]天津渤海职业技术学院信息工程学院,天津300402 [2]菏泽学院物理与电子工程学院,菏泽274015

出　　处：《低温物理学报》2020年第4期206-210,共5页Low Temperature Physical Letters

基　　金：国家自然科学基金项目(11804085)资助的课题。

摘　　要：以非广延Tsallis统计理论为基础,导出了广义玻色-爱因斯坦统计分布表达式,并用其分别讨论了三维和二维谐振势阱约束的旋转广义玻色气体的热力学性质.结合系统粒子数、玻色-爱因斯坦凝聚(BEC)临界温度、基态粒子占据率和比热等物理量的解析表达式,分析了非广延参数和势阱旋转频率等因素对系统热力学性质的影响.Based on the nonextensive Tsallis statistics theory,the generalized Bose-Einstein distribution function is derived.The thermodynamics of a rotating generalized Bose system in the three-and two-dimensional harmonic traps are respectively studied by using it.The influences of nonextensive parameter and rotation frequency are discussed based on the analytical expressions of the particle number,the Bose-Einstein condensation(BEC)critical temperature,the ground state condensation fraction and specific heat etc.

关 键 词：旋转广义玻色气体 非广延参数 玻色-爱因斯坦凝聚 

分 类 号：O469[理学—凝聚态物理]