Living on the edge in a spacetime with multiple warping

TL;DR

This paper generalizes the Randall-Sundrum warped braneworld model to higher dimensions with multiple warpings, leading to new brane configurations and potential explanations for fermion mass hierarchies.

Contribution

It introduces a multi-warping higher-dimensional model with brane-box structures and scalar fields, expanding the theoretical framework of braneworld scenarios.

Findings

Two towers of 3 branes with distinct mass scales

Potential explanation for fermion mass hierarchy

New cosmological roles for scalar fields

Abstract

The Randall-Sundrum warped braneworld model is generalised to six and higher dimensions such that the warping has a non-trivial dependence on more than one dimension. This naturally leads to a brane-box like configuration alongwith scalar fields with possibly interesting cosmological roles. Also obtained naturally are two towers of 3 branes with mass scales clustered around either of Planck scale and TeV scale. Such a scenario has interesting phenomenological consequences including an explanation for the observed hierarchy in the masses of standard model fermions.