数值方法研究谐振子势阱和磁场中的带电荷玻色气体(英文)  

Numerical method to charged Bose gases under harmonic trap and magnetic field

作　　者：李玉山[1,2] 

机构地区：[1]菏泽学院物理系,菏泽274015 [2]北京科技大学物理系,北京100083

出　　处：《原子与分子物理学报》2014年第5期821-825,共5页Journal of Atomic and Molecular Physics

基　　金：山东省高等学校科技计划项目(J11LA52)

摘　　要：采用数值方法研究了谐振子势阱囚禁带电荷理想玻色气体在磁场中的热力学行为.数值计算结果表明,相变温度随着外加磁场的增加而减小,磁化强度和磁化率与系统温度和外加磁场有关.数值方法修正了托马斯-费米近似,同时极大地提高了计算的效率和精度.The thermo -dynamical quantities of charged ideal Bose gases under a harmonic confining po-tential in the presence of a homogeneous magnetic field are investigated from a detailed numerical meth-od .T he numerical analysis suggests that the transition temperature decreases due to the increase of ex-ternal magnetic field ,the magnetization and magnetic susceptibility also exhibit characteristic tempera-ture and magnetic field dependences .Our numerical computation gives a well correction on Thomas -Fermi approximation and greatly improves the efficiency and precision .

关 键 词：数值方法 相变温度 磁化强度 

分 类 号：O469[理学—凝聚态物理]