Disappearing Dark Matter in Brane World Cosmology: New Limits on Noncompact Extra Dimensions

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  • 2 October 2002
Abstract
We explore cosmological consequences of dark matter as massive particles trapped on a brane embedded in a Randall-Sundrum noncompact higher dimension AdS5 space.In this picture, massive particles are metastable and can disappear into the bulk dimension. Here, we examine cosmological constraints on the new possibility that dark matter decays into the extra dimension.We show that disappearing dark matter is consistent (at the 95% confidence level) with both present observations of Type Ia supernovae at the highest redshift and trends in the mass-to-light ratios of galactic clusters with redshift

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