Brane bounce-type configurations in a string-like scenario

TL;DR

This paper introduces a six-dimensional brane model with a scalar field exhibiting bounce configurations in a string-like metric, resulting in a physically consistent, analytically solvable thick brane scenario with localized scalar fields.

Contribution

It presents a new analytical six-dimensional brane model with bounce scalar configurations that satisfy energy conditions and enable scalar field localization.

Findings

Energy-momentum tensor components are positive with suitable bounce configurations.

Analytical warp factor obtained from scalar field equations.

Scalar field localization demonstrated in the model.

Abstract

Brane world six dimensional scenarios with string like metric has been proposed to alleviate the problem of field localization. However, these models have been suffering from some drawbacks related with energy conditions as well as from difficulties to find analytical solutions. In this work, we propose a model where a brane is made of a scalar field with bounce-type configurations and embedded in a bulk with a string-like metric. This model produces a sound AdS scenario where none of the important physical quantities is infinite. Among these quantities are the components of the energy momentum tensor, which have its positivity ensured by a suitable choice of the bounce configurations. Another advantage of this model is that the warp factor can be obtained analytically from the equations of motion for the scalar field, obtaining as a result a thick brane configuration, in a six dimensional context. Moreover, the study of the scalar field localization in these scenario is done.