Open Inflationary Universes in Gauss-Bonnet Brane Cosmology

TL;DR

This paper investigates open inflationary universes within Gauss-Bonnet braneworld models, analyzing instanton solutions and inflation periods post-tunneling, comparing results to standard Einstein gravity scenarios.

Contribution

It introduces a one-field open inflation model in Gauss-Bonnet braneworlds, characterizing instantons and inflation dynamics distinct from Einstein gravity.

Findings

Existence of Coleman-De Lucia instantons in Gauss-Bonnet braneworlds.

Characterization of inflation periods after tunneling.

Comparison showing differences from Einstein gravity results.

Abstract

In this article, we study a type of one-field approach for open inflationary universe scenario in the context of braneworld models with a Gauss-Bonnet correction term. For a one-bubble universe model, we determine and characterize the existence of the Coleman-De Lucia instanton together with the period of inflation after tunneling has occurred. Our results are compared those analogous obtained when the usual Einstein Theory of Gravitation is used.