动量表象下的Lorentz变换生成元  

The Generators of Lorentz Transformation in Momentum Space

作　　者：张鹏飞[1] 阮图南[2] 

机构地区：[1]中国高等科学技术中心,北京100080 [2]中国科学技术大学国家同步辐射实验室和近代物理系,合肥230029

出　　处：《南京大学学报（自然科学版）》2002年第2期257-259,共3页Journal of Nanjing University（Natural Science）

基　　金：国家自然科学基金 (196 7710 2;19775 0 44& 19991484);中国博士后科学基金;高等学校博士学科点专项科研基金 (970 35 80 7)

摘　　要：在动量表象下对非零质量带自旋粒子的角动量算符和推动矢量算符也即Lorentz变换生成元进行了讨论 。Previous results related to the appropriate spin operator and the angular momentum operator for a relativistic particle with arbitrary spin and nonzero mass are discussed in an alternative way. In light of the new method the physical meaning is laid in much more clarity, and also the orresponding result for boost vector operator is just parallel. In this paper, in the momentum space, the angular momentum operator and the boost vector operator, i.e., the generators for the Lorentz transformation of a particle with arbitrary spin and nonzero mass are discussed, resulting in the new expressions of them in terms of the orbital and spin parts respectively.

关 键 词：Lorentz变换生成元 动量表象 角动量算符 推动矢量算符 自旋粒子 相对论粒子 自旋算符 

分 类 号：O572.2[理学—粒子物理与原子核物理] O412.1[理学—物理]