Anomalies, Anomalous U(1)'s and generalized Chern-Simons terms

Details Anomalies, Anomalous U(1)'s and generalized Chern-Simons terms Anomalies, Anomalous U(1)'s and generalized Chern-Simons terms

2006-05-23

arxiv.org/abs/hep-th/0605225v2

JHEP0611:057,2006

Physics

High Energy Physics

High Energy Physics - Theory

52 pages, 2 eps figures, LaTeX, feynmf & youngtab packages (v2 - Minor corrections, references added)

Scientific paper

10.1088/1126-6708/2006/11/057

A detailed analysis of anomalous U(1)'s and their effective couplings is performed both in field theory and string theory. It is motivated by the possible relevance of such couplings in particle physics, as well as a potential signal distinguishing string theory from other UV options. The most general anomaly related effective action is analyzed and parameterized. It contains Stuckelberg, axionic and Chern-Simons-like couplings. It is shown that such couplings are generically non-trivial in orientifold string vacua and are not in general fixed by anomalies. A similar analysis in quantum field theories provides similar couplings. The trilinear gauge boson couplings are also calculated and their phenomenological relevance is advocated. We do not find qualitative differences between string and field theory in this sector.

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