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.Comment: Accepted for publication in Phys.Rev.D; Manuscript revised;
References update
