Collision of Domain Walls in asymptotically Anti de Sitter spacetime

TL;DR

This paper investigates the collision dynamics of domain walls in 5D asymptotically Anti de Sitter spacetime, exploring implications for brane universe reheating and the impact of negative cosmological constant.

Contribution

It provides a detailed analysis of domain wall collisions in AdS space, including effects of the bulk's negative cosmological constant on universe evolution.

Findings

Collision dynamics depend on the negative cosmological constant.

The scalar field change influences the collision outcome.

Results suggest a reheating mechanism for cyclic brane universes.

Abstract

We study collision of two domain walls in 5-dimensional asymptotically Anti de Sitter spacetime. This may provide the reheating mechanism of an ekpyrotic (or cyclic) brane universe, in which two BPS branes collide and evolve into a hot big bang universe. We evaluate a change of scalar field making the domain wall and can investigate the effect of a negative cosmological term in the bulk to the collision process and the evolution of our universe.