Domain walls in Born-Infeld-dilaton background

TL;DR

This paper investigates the behavior of domain walls within Einstein-Born-Infeld-dilaton theory, revealing diverse solutions and dynamic behaviors such as bouncing universes and inflationary phases influenced by parameter variations.

Contribution

It introduces new solutions for domain walls in a non-trivially coupled dilaton and Born-Infeld electromagnetic background, analyzing their dynamics and cosmological implications.

Findings

Solutions exhibit singularities in all cases

Domain walls can bounce or inflate depending on parameters

Various bulk metric forms influence domain wall dynamics

Abstract

We study the dynamics of domain walls in Einstein-Born-Infeld-dilaton theory. Dilaton is non-trivially coupled with the Born-Infeld electromagnetic field. We find three different types of solutions consistent with the dynamic domain walls. For every case, the solutions have singularity. Further more, in these backgrounds, we study the dynamics of domain walls. We qualitatively plot various form of the bulk metrics and the potential encountered by the domain walls. In many cases, depending upon the value of the parameters, the domain walls show bouncing universe and also undergo inflationary phase followed by standard decelerated expansion.