Back to Search Start Over

Hyperbolic Inflation in the Jordan Frame

Authors :
Andronikos Paliathanasis
Source :
Universe, Vol 8, Iss 4, p 199 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

We consider a multi-scalar field model in the Jordan frame, which can be seen as a two-scalar field model where the Brans–Dicke field interacts in the kinetic part with the second scalar field. This theory under a conformal transformation reduces to the hyperbolic inflation. We show that scaling solutions and the de Sitter universe are provided by the theory. In the study of asymptotic dynamics, we determine an attractor where all the fluid sources contribute in the cosmological fluid. This attractor is always a spiral, and it can be seen as the analogue of the hyperbolic inflation in the Jordan frame.

Details

Language :
English
ISSN :
22181997
Volume :
8
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Universe
Publication Type :
Academic Journal
Accession number :
edsdoj.6e8a14d7ed0544d2a201e89ddb51b5c0
Document Type :
article
Full Text :
https://doi.org/10.3390/universe8040199