Supersymmetric new brane-world

TL;DR

This paper explores supersymmetric dilatonic brane-world models induced by quantum effects, demonstrating the possibility of flat or de Sitter branes with localized gravity within a 5D supergravity framework.

Contribution

It introduces a supersymmetrization of the quantum-induced dilatonic brane-world scenario using 5D gauged supergravity and analyzes conditions for SUSY preservation or breaking.

Findings

Flat SUSY dilatonic brane-worlds with quantum effects are possible.

Quantum-induced de Sitter dilatonic brane-worlds can occur with broken SUSY.

Gravity is localized on these branes.

Abstract

The quantum-induced dilatonic brane world (New Brane World) is created by brane CFT quantum effects (giving effective brane tension) in accordance with AdS/CFT set-up which also defines surface term. Considering the bosonic sector of 5d gauged supergravity with single scalar and taking the boundary action as predicted by supersymmetry, the possibility to supersymmetrize dilatonic New Brane World is discussed. It is demonstrated that for a number of superpotentials the flat SUSY dilatonic brane-world (with dynamically induced brane dilaton) or quantum-induced de Sitter dilatonic brane-world (not Anti-de Sitter one) where SUSY is broken by the quantum effects occurs. The analysis of graviton perturbations indicates that gravity is localized on such branes.