# Cosmological behavior of Bekenstein's modified theory of gravity

## Abstract

We study the background cosmology governed by the tensor-vector-scalar theory of gravity proposed by Bekenstein. We consider a broad family of functions that lead to modified gravity and calculate the evolution of the field variables both numerically and analytically. We find a range of possible behaviors, from scaling to the late time domination of either the additional gravitational degrees of freedom or the background fluid.

- Authors:

- Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom)
- Institute for Theoretical Physics, University of Heidelberg, 69120 Heidelberg (Germany)
- (Norway)
- (Canada)
- Perimeter Institute, Waterloo, Ontario N2L 2Y5 (Canada)

- Publication Date:

- OSTI Identifier:
- 21020132

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevD.75.063508; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMOLOGY; DEGREES OF FREEDOM; GRAVITATION; SCALARS; TENSORS; VECTORS

### Citation Formats

```
Bourliot, F., Ferreira, P. G., Mota, D. F., Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo, Perimeter Institute, Waterloo, Ontario N2L 2Y5, and Skordis, C.
```*Cosmological behavior of Bekenstein's modified theory of gravity*. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.063508.

```
Bourliot, F., Ferreira, P. G., Mota, D. F., Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo, Perimeter Institute, Waterloo, Ontario N2L 2Y5, & Skordis, C.
```*Cosmological behavior of Bekenstein's modified theory of gravity*. United States. doi:10.1103/PHYSREVD.75.063508.

```
Bourliot, F., Ferreira, P. G., Mota, D. F., Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo, Perimeter Institute, Waterloo, Ontario N2L 2Y5, and Skordis, C. Thu .
"Cosmological behavior of Bekenstein's modified theory of gravity". United States.
doi:10.1103/PHYSREVD.75.063508.
```

```
@article{osti_21020132,
```

title = {Cosmological behavior of Bekenstein's modified theory of gravity},

author = {Bourliot, F. and Ferreira, P. G. and Mota, D. F. and Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo and Perimeter Institute, Waterloo, Ontario N2L 2Y5 and Skordis, C.},

abstractNote = {We study the background cosmology governed by the tensor-vector-scalar theory of gravity proposed by Bekenstein. We consider a broad family of functions that lead to modified gravity and calculate the evolution of the field variables both numerically and analytically. We find a range of possible behaviors, from scaling to the late time domination of either the additional gravitational degrees of freedom or the background fluid.},

doi = {10.1103/PHYSREVD.75.063508},

journal = {Physical Review. D, Particles Fields},

number = 6,

volume = 75,

place = {United States},

year = {Thu Mar 15 00:00:00 EDT 2007},

month = {Thu Mar 15 00:00:00 EDT 2007}

}

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