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.

6 pages, 7 figures, accepted by Gravitation and Cosmology

References in corpus (3)

• Dynamics of dark energy
• Thawing quintessence with a nearly flat potential
• Cosmological constraints on a dark energy model with a non-linear scalar field