Abstract
One of the prime pieces of evidence for dark matter is the observation of large overdense regions in the Universe. To account for this observation, perturbations had to have grown since recombination by a factor greater than where is the epoch of recombination. This enhanced growth does not happen in general relativity, and so dark matter is needed in the standard theory. We show here that enhanced growth can occur in alternatives to general relativity, in particular, in Bekenstein’s relativistic version of modified Newtonian dynamics.
- Received 5 September 2006
DOI:https://doi.org/10.1103/PhysRevLett.97.231301
©2006 American Physical Society