On electric charge non-conservation in brane world

Details On electric charge non-conservation in brane world On electric charge non-conservation in brane world

2002-04-24

arxiv.org/abs/hep-th/0204205v1

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 4.ps figures; Prepared for Proceedings of Francqui Meeting on Strings and Gravity: Tying the Forces Together, Brusse

Scientific paper

In some models with infinite extra dimensions, gauge fields are localized on a brane by gravity. A generic property of these models is the existence of arbitrarily light bulk modes of charged fields. This property may lead to interesting low-energy effects such as electric charge non-conservation on the brane (decay of electron to nothing). One may worry that light charged Kaluza--Klein modes would lead to unacceptable phenomenology due to their copious production in, e.g., electron-positron annihilation and/or their contribution to QED observables like anomalous magnetic moments. We argue, however, that both loop effects and production of light charged Kaluza--Klein modes are suppressed due to screening effect of gapless spectrum of bulk photons.

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