Neutrino masses, the cosmological constant and a stable universe in a Randall-Sundrum scenario

Details Neutrino masses, the cosmological constant and a stable universe in a Randall-Sundrum scenario Neutrino masses, the cosmological constant and a stable universe in a Randall-Sundrum scenario

2009-04-13

arxiv.org/abs/0904.1970v2

Phys.Rev.D80:055029,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures, To appear in Physical Review D

Scientific paper

10.1103/PhysRevD.80.055029

The Randall-Sundrum model of warped geometry in a five-dimensional scenario, aimed at explaining the hierarchy between the Planck and electroweak scales, is intrinsically unstable in its minimal form due to negative tension of the visible brane. A proposed solution to the problem yields a negative cosmological constant in four dimensions. We show that this wrong-sign cosmological constant is restricted to small values, therefore requiring less cancellation from hitherto unknown physics, if bulk neutrinos are postulated to explain the observed neutrino mass pattern. Thus neutrino masses, a stable Tev-brane configuration and new physics in the context of the cosmological constant get rather suggestively connected by the same thread.

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