海森堡反铁磁体双子晶格模型的压缩性质  

The Squeezing Characteristics of the Heisenberg Antiferromagnet Two sublattice Model

作　　者：高迎芳[1] 郭维[1] 赵建君[1] 刘文森[1] 

机构地区：[1]山西大学物理系,山西太原030006

出　　处：《山西大学学报（自然科学版）》2001年第1期40-44,共5页Journal of Shanxi University(Natural Science Edition)

摘　　要：利用参量相关的 Bogoliubov变换公式对角化 Heisenberg反铁磁双子晶格模型哈密顿 ,得到施行变换的自旋相关的幺正算符和精确本征态。讨论了关于本征基态两个子晶格原子的总自旋 Z分量的涨落和系统 SU(1,1)生成元的压缩特性。In this paper,the Parameter dependant formulation of the Bogoliubov transformation is used to diagonalize Hamiltonian of Heisenberg antiferromagnet two sublattice modle,and to derive the spin dependant unitary operator performing this transformation and the exact eigenstates.The fluctuations of the z component of the total spin of all atoms on two sublattice in the ground state and the squeezing character of the system SU(1,1) generators are discussed.

关 键 词：BOGOLIUBOV幺正变换 压缩特性 量子光场 海森堡反铁磁体 双子晶格模型 

分 类 号：O431.2[机械工程—光学工程]