Transverse Symmetry Transformations in Gauge Theories and QCD Quark-Gluon Vertex Function  

作　　者：HE Han-xin 

出　　处：《Annual Report of China Institute of Atomic Energy》2009年第1期139-140,共2页中国原子能科学研究院年报（英文版）

基　　金：Supported by National Natural Science Foundation of China (90303006,10875174)

摘　　要：So far,the Ward-Takahashi identity in Abelian gauge theory QED ( Quantum Electrodynamics) and the Slavnov-Taylor identity in non-Abelian gauge theory QCD (Quantum Chromodynamics) derivedSo far, the Ward-Takahashi identity in Abelian gauge theory QED （ Quantum Electrodynamics） and the Slavnov-Taylor identity in non-Abelian gauge theory QCD （Quantum Chromodynamics） derived by the normal symmetry transformations can only ~onstrain the longitudinal parts of the vertices, leaving the transverse parts undetermined. In the past years, much effort has been devoted to find the constraint relations for the transverse parts of the vertices since their importance in the non-perturbative study of the gauge theories. Especially, the knowledge of the structure of the quark-gluon vertex play the essential and even key role in studying and understanding the quark confinement and dynamical chiral-symmetry breaking. However, the canonical field theory approach, which can derive the transverse WT identities in Abelian theory QED, is hard to generalize to the non-Abelian QCD case.

关 键 词：夸克胶子 对称变换 QCD 顶点 量子电动力学 量子色动力学 对称性破缺 动力学理论 

分 类 号：O572.2[理学—粒子物理与原子核物理] O151.2[理学—物理]