A simple F(R,ϕ) deformation of Starobinsky inflationary model

We study a model including a real scalar field ϕ non-minimally coupled to F ( R ) gravity, which is conformally equivalent to an Einstein–Hilbert theory, involving two real scalar fields. We consider three special cases of the potential of the field ϕ in the F ( R ) -frame: a vanishing potential, a...

Full description

Saved in:
Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2020-05, Vol.80 (5), Article 458
Main Authors: Canko, Dhimiter D., Gialamas, Ioannis D., Kodaxis, George P.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Elementary Particles
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
Scalars
String Theory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study a model including a real scalar field ϕ non-minimally coupled to F ( R ) gravity, which is conformally equivalent to an Einstein–Hilbert theory, involving two real scalar fields. We consider three special cases of the potential of the field ϕ in the F ( R ) -frame: a vanishing potential, a mass term and a Higgs potential. All these lead to non-trivial two-field potentials in the Einstein-frame which in particular directions resemble the well-known Starobinsky model. We find, that all these cases can yield viable inflationary models in complete agreement with current observational data.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-020-8025-4