Generalization of cosmological attractor approach to Einstein-Gauss-Bonnet gravity

We construct models with the Gauss-Bonnet term multiplied to a function of the scalar field leading to inflationary scenario. The consideration is related with the slow-roll approximation. The cosmological attractor approach gives the spectral index of scalar perturbations which is in a good agreeme...

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Bibliographic Details
Published inarXiv.org
Main Author Pozdeeva, E O
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 26.05.2020
Subjects
Approximation
Astronomical models
Gravitation
Order parameters
Physics - Cosmology and Nongalactic Astrophysics
Physics - General Relativity and Quantum Cosmology
Scalars
Tensors
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Summary:We construct models with the Gauss-Bonnet term multiplied to a function of the scalar field leading to inflationary scenario. The consideration is related with the slow-roll approximation. The cosmological attractor approach gives the spectral index of scalar perturbations which is in a good agreement with modern observation and allows variability for tensor-to-scalar ratio. We reconstruct models with variability of parameters which allow to reproduce cosmological attractor predictions for inflationary parameters in the leading order of \(1/N\) approximation in the Einstein-Gauss-Bonnet gravity.
Bibliography:612
ISSN:2331-8422
DOI:10.48550/arxiv.2005.10133