Tensor-vector-scalar cosmology: Covariant formalism for the background evolution and linear perturbation theory
Journal Article
·
· Physical Review. D, Particles Fields
- Astrophysics, University of Oxford, Keble Road, Oxford OX1 3RH, United Kingdom and Perimeter Institute, Waterloo, Ontario N2L 2Y5 (Canada)
A relativistic theory of gravity has recently been proposed by Bekenstein, where gravity is mediated by a tensor, a vector, and a scalar field, thus called TeVeS. The theory aims at modifying gravity in such a way as to reproduce Milgrom's modified Newtonian dynamics (MOND) in the weak field, nonrelativistic limit, which provides a framework to solve the missing mass problem in galaxies without invoking dark matter. In this paper I apply a covariant approach to formulate the cosmological equations for this theory, for both the background and linear perturbations. I derive the necessary perturbed equations for scalar, vector, and tensor modes without adhering to a particular gauge. Special gauges are considered in the appendixes.
- OSTI ID:
- 20864100
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 10 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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