Brane World Cosmologies and Statistical Properties of Gravitational Lenses
arXiv:astro-ph/0206224 · doi:10.1103/PhysRevD.66.083511
Abstract
Brane world cosmologies seem to provide an alternative explanation for the present accelerated stage of the Universe with no need to invoke either a cosmological constant or an exotic \emph{quintessence} component. In this paper we investigate statistical properties of gravitational lenses for some particular scenarios based on this large scale modification of gravity. We show that a large class of such models are compatible with the current lensing data for values of the matter density parameter (). If one fixes to be , as suggested by most of the dynamical estimates of the quantity of matter in the Universe, the predicted number of lensed quasars requires a slightly open universe with a crossover distance between the 4 and 5-dimensional gravities of the order of .
arXiv comment6 pages, 3 figures, revtex
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