Scalar field with the source in the form of the stress-energy tensor trace as a dark energy model

Abstract

We consider a scalar-tensor theory of gravitation with the scalar source being the trace of the stress-energy tensor of the scalar field itself and matter. We obtain an example of a numerical solution of the cosmological equations which shows that under some special choice of the scalar parameters, there exists a slow-roll regime in which the modern values of the Hubble and deceleration parameters may be obtained.

arXiv comment6 pages, 7 figures, accepted by Gravitation and Cosmology

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