A wormhole geometry from gravitational collapse
Abstract
We discuss a proposal on how gravitational collapse of a NEC (Null Energy Condition) violating spherically symmetric fluid distribution can avoid the formation of a zero proper volume singularity and eventually lead to a Lorentzian wormhole geometry. Our idea is illustrated using a time-evolving wormhole spacetime in which, we show how a collapsing sphere may never reach a zero proper volume end-state. The nature of geodesic congruences in such spacetimes is considered and analyzed. Our construction is inspired from a recently proposed static wormhole geometry, the multi-parameter Simpson-Visser line element, which is known to unite wormholes and black holes (regular and singular) in a single framework.
Cite
@article{arxiv.2106.14761,
title = {A wormhole geometry from gravitational collapse},
author = {Soumya Chakrabarti and Sayan Kar},
journal= {arXiv preprint arXiv:2106.14761},
year = {2021}
}
Comments
14 Pages, 8 Figures, Accepted for publication in Physical Review D