A Randall-Sundrum scenario with bulk dilaton and torsion (2009)
Mukhopadhyaya, Biswarup, Sen, Somasri, SenGupta, Soumitra
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...
Bulk antisymmetric tensor fields in a Randall-Sundrum model (2007)
Mukhopadhyaya, Biswarup, Sen, Somasri, SenGupta, Soumitra
We consider bulk antisymmetric tensor fields of various ranks in a Randall-Sundrum scenario. We show that, rank-2 onwards, the zero-modes of the projections of these fields on the (3+1) dimensional...
Bulk Kalb-Ramond field in Randall Sundrum scenario (2004)
Mukhopadhyaya, Biswarup, Sen, Siddhartha, Sen, Somasri, SenGupta, Soumitra
We have considered the most general gauge invariant five-dimensional action of a second rank antisymmetric Kalb-Ramond tensor gauge theory, including a topological term of the form...
CMB constraints on interacting cosmological models (2004)
Pavon, Diego, Sen, Somasri, Zimdahl, Winfried
Non-canonical scaling of the form $\rho_{x} \propto \rho_{m} a^{\xi}$, where $\rho_{x}$ and $\rho_{m}$ are the energy densities of dark energy and dark matter, respectively, provides a natural way to...
Periodic distribution of galaxies in generalized scalar tensor theory (2003)
Banerjee, Narayan, Pavon, Diego, Sen, Somasri
With the help of Nordtvedt's scalar tensor theory an exact analytical model of a non-minimally coupled scalar field cosmology in which the gravitational coupling $G$ and the Hubble factor $H$...
Parity violation in four and higher dimensional spacetime with torsion (2002)
Mukhopadhyaya, Biswarup, Sen, Somasri, SenGupta, Soumitra, Sur, Saurabh
The possibility of parity violation in a gravitational theory with torsion is extensively explored in four and higher dimensions. In the former case,we have listed our conclusions on when and whether...
Does a Randall-Sundrum scenario create the illusion of a torsion-free universe? (2002)
Mukhopadhyaya, Biswarup, Sen, Somasri, SenGupta, Soumitra
We consider spacetime with torsion in a Randall-Sundrum (RS) scenario where torsion, identified with the rank-2 Kalb-Ramond field, exists in the bulk together with gravity. While the interactions of...
Bulk torsion fields in theories with large extra dimensions (2001)
Mukhopadhyaya, Biswarup, Sen, Somasri, SenGupta, Soumitra
We study the consequences of spacetime torsion coexisting with gravity in the bulk in scenarios with large extra dimensions. Having linked torsion with the Kalb-Ramond antisymmetric tensor field...
On the detection of scalar hair (2001)
Banerjee, Narayan, Sen, Somasri, Dadhich, Naresh
It is shown that the conclusion regarding the existence of a scalar hair for a black hole in a nonminimally coupled self interacting scalar tensor theory can be drawn from the that for a scalar field...