Multigravity in six dimensions: Generating bounces with flat positive tension branes

TL;DR

This paper extends multigravity models to six dimensions, creating flat, positive tension brane solutions without negative tensions by utilizing the internal space's curvature, offering a viable multigravity realization.

Contribution

It introduces a six-dimensional multigravity model with flat, positive tension branes, avoiding negative tensions through internal space curvature effects.

Findings

Achieved flat, positive tension branes without negative tensions.

Demonstrated internal space curvature enables bounce configurations.

Provided a viable multigravity framework in six dimensions.

Abstract

We present a generalization of the five dimensional multigravity models to six dimensions. The key characteristic of these constructions is that that we obtain solutions which do not have any negative tension branes while at the same time the branes are kept flat. This is due to the fact that in six dimensions the internal space is not trivial and its curvature allows bounce configurations with the above feature. These constructions give for the first time a theoretically and phenomenologically viable realization of multigravity.