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28 March 2024
 
  » arxiv » gr-qc/0001066

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Reconstruction of a scalar-tensor theory of gravity in an accelerating universe
B. Boisseau ; G. Esposito-Farese ; D. Polarski ; A.A. Starobinsky ;
Date 21 Dec 1999
Journal Phys.Rev.Lett. 85 (2000) 2236
Subject gr-qc astro-ph
AbstractThe present acceleration of the Universe strongly indicated by recent observational data can be modeled in the scope of a scalar-tensor theory of gravity. We show that it is possible to determine the structure of this theory (the scalar field potential and the functional form of the scalar-gravity coupling) along with the present density of dustlike matter from the following two observable cosmological functions: the luminosity distance and the linear density perturbation in the dustlike matter component as functions of redshift. Explicit results are presented in the first order in the small inverse Brans-Dicke parameter 1/omega.
Source arXiv, gr-qc/0001066
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