# Torsion braneworlds in a tensor-vector gravity

## TL;DR

This paper explores how torsion driven by a background vector influences gravity, bulk fields, and brane geometries in a warped braneworld, revealing new isotropic and anisotropic solutions and modifications to field couplings.

## Contribution

It introduces novel thick brane geometries and analyzes the impact of torsion-induced couplings on bosonic and fermionic fields in the braneworld context.

## Key findings

- Discovery of new isotropic and anisotropic thick brane solutions.
- Modification of Kaluza-Klein spectra due to torsion-related couplings.
- Altered fermion spinor connections and Yukawa-like interactions.

## Abstract

We study the properties of gravity and bulk fields living in a torsion warped braneworld. The torsion is driven by a background vector whose norm provides a source for the bulk cosmological constant. For a vector as the derivative of a scalar field, we find new isotropic and anisotropic thick brane geometries. We analyse the features of bosonic and fermionic fields in this isotropic and in standing wave scenarios. The background vector provides nonminimal coupling between the field and the geometry leading to modifications in the Kaluza-Klein states. The spinor connection is modified by the torsion and a derivative Yukawa-like coupling is proposed. The effects of these new couplings are investigated.