Anomalous coupling of scalars to gauge fields

Details Anomalous coupling of scalars to gauge fields Anomalous coupling of scalars to gauge fields

2010-10-21

arxiv.org/abs/1010.4536v2

Phys. Lett. B699:5-9, 2011

Physics

High Energy Physics

High Energy Physics - Theory

5 pages. v2: minor changes, matches version published in PLB

Scientific paper

10.1016/j.physletb.2011.03.047

We study the transformation properties of a scalar-tensor theory, coupled to
fermions, under the Weyl rescaling associated with a transition from the Jordan
to the Einstein frame. We give a simple derivation of the corresponding
modification to the gauge couplings. After changing frame, this gives rise to a
direct coupling between the scalar and the gauge fields.

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