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Action principle formulation for motion of extended bodies in General Relativity
Jeeva Anandan, Naresh Dadhich, Parampreet Singh
We present an action principle formulation for the study of motion of an extended body in General Relativity in the limit of weak gravitational field. This gives the classical equa…
Can brane cosmology with a vanishing Λexplain the observations?
R. G. Vishwakarma, Parampreet Singh
A plethora of models of the universe have been proposed in recent years claiming that the present universe is accelerating, being driven by some hypothetical source with negative p…
Localized gravity on FRW branes
Parampreet Singh, Naresh Dadhich
We study the system of Schwarzschild anti de Sitter (S-AdS) bulk and FRW brane for localization of gravity; i.e. zero mass gravitons having ground state on the brane, and thereby r…
Brane curvature and supernovae Ia observations
Parampreet Singh, R. G. Vishwakarma, Naresh Dadhich
It is well known that modifications to the Friedmann equation on a warped brane in an anti de Sitter bulk do not provide any low energy distinguishing feature from standard cosmolo…
Localization of gravity in brane world cosmologies
Parampreet Singh, Naresh Dadhich
The most remarkable and interesting feature of brane world scenario is the use of bulk's curvature to localize gravity on the brane, albeit with fine tuning of the brane and bulk p…