Mass hierarchy and localization of gravity in extra time

Details Mass hierarchy and localization of gravity in extra time Mass hierarchy and localization of gravity in extra time

2000-03-29

arxiv.org/abs/hep-th/0003269v3

Phys.Lett. B488 (2000) 117-122

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, JHEP format, no figures, typos corrected, to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(00)00874-1

We consider Randall-Sundrum model with localized gravity, replacing the extra compact space-like dimension by a time-like one. In this way the solution to the hierarchy problem can be reconciled with a correct cosmological expansion of the visible universe, just as a trivial result of the sign flip of cosmological constants in the bulk and on the 3-branes relative to the case of extra space-like dimension. Some phenomenological aspects of the proposed scenario related to the tachyonic nature of Kaluza-Klein states of graviton are also discussed.

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