Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-10-30
Nucl.Phys. B446 (1995) 35-64
Physics
High Energy Physics
High Energy Physics - Phenomenology
30 pgs., LaTeX with optional PicTex figures, JHU-TIPAC-940017, HUTP-A0/03
Scientific paper
10.1016/0550-3213(95)00247-P
We consider the evolution of quantum fermi fields in Minkowski gauge field backgrounds. Our motivation is the study of anomalous fermion number violating processes. We derive selection rules for fermion scattering amplitudes which relate the violation of fermionic charge to the change in winding between early and late times of the vacuum part of the gauge field. We find that the amount of fermion number violation is always integer, even when the topological charge of the gauge field is fractional. As an explicit example, we apply our results to spherically symmetric Minkowski solutions.
Gould Thomas M.
Hsu Stephen D. H.
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