The Axion from Five-Dimensional Supergravity

Details The Axion from Five-Dimensional Supergravity The Axion from Five-Dimensional Supergravity

2007-07-03

arxiv.org/abs/0707.0429v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

We consider the axion arising from five-dimensional supergravity in the presence of boundaries. We find the approximate bosonic effective action to estimate the lower bound on the "Peccei-Quinn" energy scale with a flat bulk. With a warped bulk, one can obtain a scale within the standard window; this puts a bound on the required curvature scale relative to the proper separation between boundaries. We comment on the scalar potential that may ruin the strong-CP resolution, and the effective derivative coupling to matter in 5D hypermultiplets.

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