Constraining TeVeS gravity as effective dark matter and dark energy

摘要

The phenomena customarily described with the standard Lambda CDM model are broadly reproduced by an extremely simple model in TeVeS, Bekenstein's(-1) modi. cation of general relativity motivated by galaxy phenomenology. Our model can account for the acceleration of the Universe seen at SNeIa distances without a cosmological constant, and the accelerations seen in rotation curves of nearby spiral galaxies and gravitational lensing of high-redshift elliptical galaxies without cold dark matter. The model is consistent with BBN and the neutrino mass between 0.05 eV to 2 eV. The TeVeS scalar field is shown to play the effective dual roles of dark matter and dark energy, with the amplitudes of the effects controlled by a mu function of the scalar field, called the mu essence here. We also discuss outliers to the theory's predictions on multiimaged galaxy lenses and outliers on the subgalaxy scale.