Formation of Topological Black holes from Gravitational Collapse

TL;DR

This paper demonstrates that topologically diverse black holes can form from dust cloud collapse in anti de Sitter spacetime, with their properties linked to initial density, expanding understanding of gravitational collapse outcomes.

Contribution

It shows that black holes with any horizon topology can form from dust collapse in anti de Sitter space, a novel result in gravitational physics.

Findings

Black holes with arbitrary horizon topology can form from dust collapse.

The quasilocal mass is proportional to initial density, which can be very small.

Formation of topological black holes depends on spacetime identifications.

Abstract

We consider the gravitational collapse of a dust cloud in an asymptotically anti de Sitter spacetime in which points connected by a discrete subgroup of an isometry subgroup of anti de Sitter spacetime are identified. We find that black holes with event horizons of any topology can form from the collapse of such a cloud. The quasilocal mass parameter of such black holes is proportional to the initial density, which can be arbitrarily small.