Supergravity brane worlds and tachyon potentials

TL;DR

This paper investigates graviton modes on supergravity domain walls formed by tachyon potentials, linking brane world scenarios with supergravity and tachyon dynamics in string theory.

Contribution

It introduces a model of thick branes as BPS solutions in supergravity theories influenced by tachyon potentials, highlighting their role as lower-dimensional branes.

Findings

Massless and massive graviton modes are localized on the branes.

Domain walls are realized as BPS branes from tachyon potentials.

The framework connects supergravity solutions with tachyon-driven brane formation.

Abstract

We study massless and massive graviton modes that bind on thick branes which are supergravity domain walls solutions in $D$-dimensional supergravity theories where only the supergravity multiplet and the scalar supermultiplet are turned on. The domain walls are bulk solutions provided by tachyon potentials. Such domain walls are regarded as BPS branes of one lower dimension that are formed due to tachyon potentials on a non-BPS D-brane.