Unification of inflation with dark energy in f ( R ) gravity and axion dark matter

In this work we introduce an effective model of f(R) gravity containing a nonminimal coupling to the axion scalar field. The axion field is described by the misalignment model, in which the primordial U(1) Peccei-Quin symmetry is broken during inflation and the f(R) gravity is described by the R2 mo...

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Bibliographic Details
Published in:Physical review. D 2019-05, Vol.99 (10), p.104070, Article 104070
Main Authors: Odintsov, S. D., Oikonomou, V. K.
Format: Article
Language:English
Subjects:
Cold dark matter
Cosmological constant
Coupling
Dark energy
Dark matter
Evolution
Flux density
Gravitation
Misalignment
Universe
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Summary:In this work we introduce an effective model of f(R) gravity containing a nonminimal coupling to the axion scalar field. The axion field is described by the misalignment model, in which the primordial U(1) Peccei-Quin symmetry is broken during inflation and the f(R) gravity is described by the R2 model, and in addition, the nonminimal coupling has the form ∼h(ϕ)Rγ, with 0
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.104070