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arXiv · 0903.0722

A Randall-Sundrum scenario with bulk dilaton and torsion

Biswarup Mukhopadhyaya·Somasri Sen·Soumitra SenGupta
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Abstract

We consider a string-inspired torsion-dilaton-gravity action in a Randall-Sundrum brane world 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 [12], 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 dilaton and torsion may lead to new signals in Tev scale experiments, bearing the stamp of extra warped dimensions.

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Biswarup Mukhopadhyaya, Somasri Sen, Soumitra SenGupta. 2009-06-05. A Randall-Sundrum scenario with bulk dilaton and torsion. https://doi.org/10.1103/physrevd.79.124029

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