Work

Interdependence between integrable cosmological models with minimal and non-minimal coupling

Year: 2015

Type: article

Abstract: We consider the relation between exact solutions of cosmological models having minimally and non-minimally coupled scalar fields. This is done for a particular class of solvable models which, in the Einstein frame, have potentials depending on hyperbolic functions and in the Jordan frame, where the non-minimal coupling is conformal, possess a relatively simple dynamics. We show that a particular model in this class can be generalized to the cases of closed and open Friedmann universes and still exhibits a simple dynamics. Further we illustrate the conditions for the existences of bounces in some sub-classes of the set of integrable models we have considered.

Source: Classical and Quantum Gravity

DOI: 10.1088/0264-9381/33/1/015004

Authors: Alexander Yu Kamenshchik, Ekaterina O Pozdeeva, Alessandro Tronconi, Giovanni Venturi, Sergey Yu Vernov

Institutions: Russian Academy of Sciences, Istituto Nazionale di Fisica Nucleare, Landau Institute for Theoretical Physics, Lomonosov Moscow State University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Russian Foundation for Basic Research

Awards: G1453339905, G2975190514