Mass Gap in Kaluza-Klein Spectrum in a Network of Brane Worlds

TL;DR

This paper investigates a brane world model with a periodic brane configuration, demonstrating the existence of a massless graviton separated by a mass gap from the Kaluza-Klein spectrum, which could address phenomenological issues.

Contribution

It introduces a novel brane world setup with a mass gap in the Kaluza-Klein spectrum, improving phenomenological viability.

Findings

Supports a massless graviton mode

Establishes a mass gap separating the graviton from KK modes

Potentially resolves continuum KK mode problems

Abstract

We consider the Newton's force law for brane world consisting of periodic configuration of branes. We show that it supports a massless graviton. Furthermore, this massless mode is well separated from the Kaluza-Klein spectrum by a mass gap. Thus most of the problems in phenomenology coming from continuum of Kaluza-Klein modes without mass gap are potentially cured in such a model.