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

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.

Comments: 9 pages, TeX, harvamac(big), corrected typos