# Thin shells associated to black string spacetimes

## TL;DR

This paper investigates the properties and stability of thin matter shells connecting different charged black string spacetimes, considering both interior-exterior and wormhole configurations under cylindrical symmetry perturbations.

## Contribution

It introduces a detailed analysis of the matter content and stability conditions for thin shells in charged black string geometries, including wormhole scenarios.

## Key findings

- Identified conditions for mechanical stability of shells under perturbations.
- Characterized matter content required for stable shell configurations.
- Explored global structures involving shells, including wormholes.

## Abstract

In this article, we study thin shells of matter connecting charged black string geometries with different values of the corresponding parameters. We analyze the matter content and the mechanical stability of the shells undergoing perturbations that preserve the cylindrical symmetry. Two different global configurations are considered: an interior geometry connected to an exterior one at the surface where the shell is placed, and two exterior geometries connected by a wormhole throat located at the shell position.