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Cosmic inflation prevents singularity formation in collapse into a Hayward black hole
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Cosmic inflation prevents singularity formation in collapse into a Hayward black hole
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We construct a (quantum mechanically) modified model for the Oppenheimer-Snyder collapse scenario where the exterior of the collapsing dust ball is a Hayward black hole spacetime and the interior is a dust Friedmann-Robertson-Walker cosmology. This interior cosmology is entirely determined by the junction conditions with the exterior black hole. It turns out to be non-singular, displaying a power-law contraction which precedes a de Sitter phase or, reversely, a power-law expansion followed by a de Sitter era. We demonstrate that cosmic inflation in the collapse setting is a mechanism that decelerates collapsing matter, thereby preventing singularity formation. We also analyse the global causal structure and the viability of the model.
Forward citations
Cited by 3 Pith papers
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Obstructions to Minimal Regular Black Hole Cosmologies
Obstructions from matching conditions and completeness theorems prevent minimal regular black hole models from hosting unbounded FRW daughter cosmologies.
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Obstructions to Minimal Regular Black Hole Cosmologies
A minimal FRW 'daughter universe' matched without a shell to an asymptotically flat regular black hole is either bounded (closed) or geodesically incomplete (flat/open), so a regular core alone cannot supply a viable ...
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Obstructions to Minimal Regular Black Hole Cosmologies
No-shell FRW daughters matched to asymptotically flat regular black holes are bounded if closed and past-incomplete if flat or open; a regular core alone cannot yield a viable daughter cosmology.
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