Localization of fermionic fields on braneworlds with bulk tachyon matter

TL;DR

This paper investigates how fermionic fields can be localized on warped braneworlds generated by bulk tachyon matter, extending previous models to include both spin-1/2 and spin-3/2 fields with scalar backgrounds and supergravity considerations.

Contribution

It extends the localization analysis of fermionic fields to braneworlds with bulk tachyon matter, including supergravity effects for spin-3/2 fields, which is a novel approach.

Findings

Fermionic fields can be localized on both thin and thick branes with scalar backgrounds.

Supergravity coupling enables localization of spin-3/2 fields on these branes.

The mechanism supports the viability of bulk tachyon matter in braneworld models.

Abstract

Recently, Pal and Skar in [arXiv:hep-th/0701266] proposed a mechanism to arise the warped braneworld models from bulk tachyon matter, which are endowed with a thin brane and a thick brane. In this framework, we investigate localization of fermionic fields on these branes. As in the 1/2 spin case, the field can be localized on both the thin and thick branes with inclusion of scalar background. In the 3/2 spin extension, the general supergravity action coupled to chiral supermultiplets is considered to produce the localization on both the branes as a result.