De-Sitter and double asymmetric brane worlds

TL;DR

This paper constructs and analyzes asymmetric de Sitter and double kink brane world models, demonstrating their properties and the possibility of confining gravity on these novel configurations.

Contribution

It introduces a new method to generate asymmetric brane worlds with dS expansion and analyzes their gravitational confinement properties.

Findings

Gravity can be localized on one of the two walls in double brane configurations.

Static and dynamic cases differ in their vacuum geometries, with dynamic cases showing dS and AdS vacua.

The models interpolate between different cosmological constants, offering new insights into brane world scenarios.

Abstract

Asymmetric brane worlds with dS expansion and static double kink topology are obtained from a recently proposed method and their properties are analyzed. These domain walls interpolate between two spacetimes with different cosmological constants. In the dynamic case, the vacua correspond to dS and AdS geometry, unlike the static case where they correspond to AdS background. We show that is possible to confine gravity on such branes. In particular, the double brane world host two different walls, so that the gravity is localized on one of them.