Gauge invariance in two-particle scattering

被引：35
作者：
Borasoy, B
Bruns, PC
Meissner, UG
Nissler, R
机构：
[1] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany
[2] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany
来源：
PHYSICAL REVIEW C | 2005年 / 72卷 / 06期
关键词：
D O I：
10.1103/PhysRevC.72.065201
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
It is shown how gauge invariance is obtained for the coupling of a photon to a two-body state described by the solution of the Bethe-Salpeter equation. This is illustrated both for a complex scalar field theory and for interaction kernels derived from chiral effective Lagrangians.
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页数：8
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