关于两个量子统计模型中铁磁态平均场理论的讨论  

Discussion about ferromagnetic mean-field theory in two quantum models

作　　者：贺丽[1] 

机构地区：[1]江苏科技大学张家港校区物理教研室,江苏张家港215600

出　　处：《大学物理》2011年第8期5-8,共4页College Physics

摘　　要：利用平均场理论讨论了零温下具有长程库仑势的电子气体和短程相互作用的费米原子气体的铁磁相变问题,比较了两个模型中铁磁转变的不同性质.The ground state phase transition from the paramagnetic state to the ferromagnetic state is studied via the mean-field approach both in electron gas with long range Coulomb interaction and atom gas with short range interaction.The properties of phase transition are obtained and the differences between the two models are compared.

关 键 词：平均场理论 铁磁相变 Hartree-Fock近似 Stoner判据 

分 类 号：O413.1[理学—理论物理]