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.

arXiv comment14 Pages, 8 Figures, Accepted for publication in Physical Review D

References in corpus (35)

• Formation and evaporation of non-singular black holes
• Wormhole geometries in f(R) modified theories of gravity
• Phantom energy traversable wormholes
• Wormholes supported by a phantom energy
• Black-bounce to traversable wormhole
• Naked Singularities in Spherically Symmetric Inhomogeneous Tolman-Bondi Dust Cloud Collapse
• Modified-gravity wormholes without exotic matter
• Wormholes in Dilatonic Einstein-Gauss-Bonnet Theory
• Stability of phantom wormholes
• Generalized Vaidya Solutions
• Generalized energy conditions in Extended Theories of Gravity
• Energy conditions in modified gravity
• Why do naked singularities form in gravitational collapse?
• Collapsing spherical stars in f(R) gravity
• Evolving Lorentzian Wormholes
• Static and symmetric wormholes respecting energy conditions in Einstein-Gauss-Bonnet gravity
• Exact solutions for null fluid collapse
• The Choptuik spacetime as an eigenvalue problem
• Vaidya spacetimes, black-bounces, and traversable wormholes
• Wormholes, the weak energy condition, and scalar-tensor gravity
• Phases of massive scalar field collapse
• Wormhole Solutions in Gauss-Bonnet-Born-Infeld Gravity
• Can extra dimensional effects allow wormholes without exotic matter?
• The Energy-Momentum Tensor for a Dissipative Fluid in General Relativity
• Cosmological evolution of a ghost scalar field
• Perturbations and Critical Behavior in the Self-Similar Gravitational Collapse of a Massless Scalar Field
• Black holes with short hair
• The Structure of Naked Singularity in Self-similar Gravitational Collapse II
• Kinematics of geodesic flows in stringy black hole backgrounds
• Self-similar scalar field collapse
• Conformally Flat Collapsing Stars in f (R) gravity
• Gamma-ray bursts as the birth-cries of black holes
• Geodesic congruences in warped spacetimes
• Collapsing spherical star in Scalar-Einstein-Gauss-Bonnet gravity with a quadratic coupling
• Evolution of geodesic congruences in a gravitationally collapsing scalar field background

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