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arXiv · 2006.08027

Inflation with a quartic potential in the framework of Einstein-Gauss-Bonnet gravity

Ekaterina O. Pozdeeva·Mayukh Raj Gangopadhyay·Mohammad Sami·Alexey V. Toporensky·Sergey Yu. Vernov
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Abstract

We investigate inflationary dynamics in the framework of the Einstein-Gauss-Bonnet gravity. In the model under consideration, the inflaton field is non-minimally coupled to the Gauss-Bonnet curvature invariant, so that the latter appears to be dynamically important. We consider a quartic potential for the inflaton field, in particular the one asymptotically connected to the Higgs inflation, and a wider class of coupling functions not considered in the earlier work. Keeping in mind the observational bounds on the parameters - the amplitude of scalar perturbations $A_s$, spectral index $n_s$ and tensor-to-scalar ratio $r$, we demonstrate that the model a quartic potential and the proposed coupling function is in agreement with observation.

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BibTeXRIS

Ekaterina O. Pozdeeva, Mayukh Raj Gangopadhyay, Mohammad Sami, Alexey V. Toporensky, Sergey Yu. Vernov. 2020-06-14. Inflation with a quartic potential in the framework of Einstein-Gauss-Bonnet gravity. https://doi.org/10.1103/physrevd.102.043525

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