New classes of black hole spacetimes in 2+1 gravity

TL;DR

This paper introduces new multi-parameter black hole solutions in 2+1 gravity by applying electrogravity transformation, revealing the BTZ black hole as a special case and analyzing their properties.

Contribution

It presents novel black hole solutions in 2+1 dimensions derived via electrogravity transformation, expanding the known solution space.

Findings

BTZ black hole is a special case of the new solutions

New solutions exhibit diverse causal and thermodynamical properties

Analysis of matter content and structure of the solutions

Abstract

The electrogravity transformation is applied to the three-dimensional Einstein field equations to obtain new multi-parameter families of black hole solutions. The Ba\~{n}ados-Teitelboim-Zanelli black hole is shown to be a special case of one of these families. The causal structure, associated matter, as well as the mechanical and thermodynamical properties of some of the solutions are discussed.