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

TL;DR

This paper extends the cosmological attractor approach to Einstein-Gauss-Bonnet gravity, constructing inflationary models that match observational data and allow parameter variability within the slow-roll approximation.

Contribution

It introduces a generalized framework for inflationary models in Einstein-Gauss-Bonnet gravity that reproduces attractor predictions in the leading order of $1/N$ approximation.

Findings

Spectral index aligns with observations.

Models exhibit variability in tensor-to-scalar ratio.

Reproduces cosmological attractor predictions.

Abstract

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.