Gauge symmetry and cosmological constant on a brane

TL;DR

This paper investigates how gauge bosons and gravitons can be localized on different types of branes in a 5D bulk space, highlighting the dependence on the observed cosmological constant of our universe.

Contribution

It identifies conditions under which gauge bosons and gravitons are localized on dS and Minkowski branes, linking brane type to the cosmological constant.

Findings

Both graviton and gauge bosons can be trapped on dS and Minkowski branes.

Localization depends on the brane's cosmological constant.

The observed cosmological constant influences which brane type is realized.

Abstract

We have examined the localization of gauge bosons on the three-brane embedded in 5D bulk space-time, and we find two kinds of branes on which both graviton and gauge bosons can be trapped. One is the dS brane with a positive cosmological constant, and the other is the one with zero cosmological constant or 4D Minkowski brane. Then, which brane is realized would depend on the observation of the cosmological constant of our world.