Eichmann Gernot
Institut für Theoretische Physik, Universität Giessen, 35392 Giessen, Germany.
Prog Part Nucl Phys. 2012 Apr;67(2):234-238. doi: 10.1016/j.ppnp.2011.12.024.
I briefly summarize recent results for nucleon and [Formula: see text] electromagnetic, axial and transition form factors in the Dyson-Schwinger approach. The calculation of the current diagrams from the quark-gluon level enables a transparent discussion of common features such as: the implications of dynamical chiral symmetry breaking and quark orbital angular momentum, the timelike structure of the form factors, and their interpretation in terms of missing pion-cloud effects.
我简要总结了戴森-施温格方法中核子以及电磁、轴矢和跃迁形状因子的近期结果。从夸克-胶子层次计算流图，能够对一些共同特征进行清晰的讨论，比如：动力学手征对称性破缺和夸克轨道角动量的影响、形状因子的类时结构，以及它们基于缺失π介子云效应的解释。
