Work

Bouncing universes in scalar-tensor gravity around conformal invariance

Year: 2016

Type: article

Abstract: We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity when the scalar field has a nonconformal coupling to the Ricci scalar. We prove that bouncing universes regular in the future with essentially the same dynamics as for the conformal coupling case do exist when the coupling deviates slightly from it. This is found numerically for more substantial deviations as well. In some cases however new features are found like the ability of the system to leave the effective phantom regime.

Source: Journal of Cosmology and Astroparticle Physics

DOI: 10.1088/1475-7516/2016/05/048

Authors: B. Boisseau, H. Giacomini, D. Polarski

Institutions: Université de Tours, Centre National de la Recherche Scientifique, Laboratoire de Mathématiques et Physique Théorique, Laboratoire de Mathématiques Analyse, Probabilités, Modélisation Orléans, Laboratoire Charles Coulomb

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2304976929

FWCI: 1.753

Cites: 31

Cited by: 19

Related to: 10