奇异拉氏量系统的正则对称性和Ward恒等式  

Canonical Symmetry in a System with Singular Lagrangian and Ward Identities

作　　者：李子平[1] 

机构地区：[1]北京工业大学应用物理系

出　　处：《高能物理与核物理》1994年第8期694-701,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金;北京市自然科学基金

摘　　要：给出了场论中约束Ｈａｍｉｌｔｏｎ系统规范生成元的构成，说明了生成元中与第一类约束相联系的系数之间的关系．基于相空间中的生成泛函，导出了相应正则形式的Ｗａｒｄ恒等式．讨论了与混合陈－Ｓｉｍｏｎｓ拉氏量等价的场论模型中的应用．An algorithm to construct the generator of gauge transformation for a constrained Hamiltonian system is given.The relationships among the coefficients connecting with first-class constraints in the generator is cleared.Based on the phase space generating functional,the corresponding Ward identities in canonical formalism is deduced.The preliminary applications of above results to a model in field theory which is functionally equivalent to the mixed Chern-Simons Lagrangian is discussed in detail.

关 键 词：狄拉克约束 规范生成元 WARD恒等式 

分 类 号：O413.3[理学—理论物理]