Open inflationary universes in a brane world cosmology

TL;DR

This paper explores open inflationary universe models within brane world cosmology, analyzing instanton solutions and inflation periods post-tunneling, and compares findings with Einstein relativity models.

Contribution

It introduces a one-field open inflation model in brane world cosmology and characterizes Coleman-De Lucia instantons and inflation periods in this framework.

Findings

Existence of Coleman-De Lucia instantons in brane world models

Comparison shows differences from Einstein relativity models

Characterization of inflation period after tunneling

Abstract

In this paper, we study a type of one-field model for open inflationary universe models in the context of the brane world models. In the scenario of 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 to those found in the Einstein theory of Relativistic Models.