一般自旋系统的相位  

Phase of the general spin system

作　　者：吕小茜 于肇贤[2,3] Lü Xiaoxi;YU Zhaoxian(Department of Mechatronics Engineering,Langfang Polytechnic Institute,Langfang 065000,China;School of Applied Science,Beijing Information Science&Technology University,Beijing 100192,China;State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]廊坊职业技术学院机电工程系,廊坊065000 [2]北京信息科技大学理学院,北京100192 [3]北京邮电大学网络与交换技术国家重点实验室,北京100876

出　　处：《北京信息科技大学学报（自然科学版）》2022年第6期46-48,共3页Journal of Beijing Information Science and Technology University

基　　金：网络与交换技术国家重点实验室(北京邮电大学)开放课题资助项目(SKLNST-20**-2-0*)(注:因项目性质,编号仅部分显示。)。

摘　　要：利用Lewis-Riesenfeld(L-R)不变量理论,研究了一般自旋系统的相位。利用薛定谔方程、幺正变换和Baker-Campbell-Hausdoff公式等计算方法,分别求出了一般自旋系统的动力学相位和几何相位,并且发现在考虑循环演化的情况下还可以得到Aharonov-Anandan相因子。Using the L-R invariant theory,the phase of the general spin system was studied.By means of the Schrodinger equation,the M-positive transformation and the Baker-Campbell-Hausdoff formula,the dynamical and geometric phases were presented respectively.The Aharonov-Anandan phase was also obtained in the case of considering cyclical evolution.

关 键 词：L-R不变理论 自旋系统 动力学相位 几何相位 

分 类 号：O413.1[理学—理论物理]