Cosmological behavior of Bekenstein’s modified theory of gravity

F. Bourliot, P. G. Ferreira, D. F. Mota, and C. Skordis
Phys. Rev. D 75, 063508 – Published 15 March 2007

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.

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  • Received 9 November 2006

DOI:https://doi.org/10.1103/PhysRevD.75.063508

©2007 American Physical Society

Authors & Affiliations

F. Bourliot1, P. G. Ferreira1, D. F. Mota2,3,4, and C. Skordis4

  • 1Astrophysics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
  • 2Institute for Theoretical Physics, University of Heidelberg, 69120 Heidelberg, Germany
  • 3Institute of Theoretical Astrophysics, University of Oslo, Box 1029, 0315 Oslo, Norway
  • 4Perimeter Institute, Waterloo, Ontario N2L 2Y5, Canada

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Vol. 75, Iss. 6 — 15 March 2007

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