Randall-Sundrum scenario with bulk dilaton and torsion

Mukhopadhyaya, Biswarup ; Sen, Somasri ; SenGupta, Soumitra (2009) Randall-Sundrum scenario with bulk dilaton and torsion Physical Review D - Particles, Fields, Gravitation and Cosmology, 79 (12). Article ID 124029. ISSN 1550-7998

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Official URL: https://journals.aps.org/prd/abstract/10.1103/Phys...

Related URL: http://dx.doi.org/10.1103/PhysRevD.79.124029

Abstract

We consider a string-inspired torsion-dilaton-gravity action in a Randall-Sundrum braneworld scenario and show that, in an effective four-dimensional theory on the visible brane, the rank-2 antisymmetric Kalb-Ramond field (source of torsion) is exponentially suppressed. The result is similar to our earlier result in [B. Mukhopadhyaya, S. Sen, and S. SenGupta, Phys. Rev. Lett. 89, 121101 (2002); Phys. Rev. Lett. 89, 259902(E) (2002)], where no dilaton was present in the bulk. This offers an explanation of the apparent invisibility of torsion in our space-time. However, in this case the trilinear couplings ∼TeV−1 between the dilaton and torsion may lead to new signals in TeV-scale experiments, bearing the stamp of extra warped dimensions.

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ID Code:114628
Deposited On:04 Jun 2018 11:25
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