弱相互作用费米气体的热力学性质  

Thermodynamic properties of a weaklyinteracting Fermi gas

作　　者：苏国珍[1] 陈丽璇[1] 

机构地区：[1]厦门大学物理系,厦门361005

出　　处：《物理学报》2004年第4期984-990,共7页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :1 0 2 750 51 );厦门大学校级自选课题基金 (批准号 :Y0 70 0 8)资助的课题~~

摘　　要：根据赝势法导出无外势时弱相互作用费米气体的化学势、内能和定容热容的解析表达式 .在此基础上 ,采用局域密度近似研究谐振势中弱相互作用费米气体的热力学性质 。The analytical expressions of chemical potential, total energy and heat capacity at a constant volume for a weakly interacting Fermi gas in the absence of exter nal potential are derived by using “pseudopotential' method. Based on the deriv ed expressions, the thermodynamic properties of a weakly interacting Fermi gas t rapped in a harmonic potential are studied under the local-density approximatio n. The effects of interparticle interactions on the properties of the systems ar e discussed.

关 键 词：费米气体 相互作用 赝势法 局域密度近似 热力学性质 化学势 解析表达式 

分 类 号：O572.3[理学—粒子物理与原子核物理]