Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-06-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages; cross-reference with Astrophysics
Scientific paper
The high degeneracy of KK modes in models which have bulk axions moving in some extra, compact dimensions which are larger than O (Angstrom)strongly tightens the supernova upper bounds on the axion photon coupling making axions practically unobservable. Conversely, discovering axions directly or indirectly will exclude such models. These drastic conclusions are avoided if the supernova and bounds from solar axion searches are relaxed.
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