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General Relativity and Quantum Cosmology

Title: A non-singular universe out of Hayward black hole

Abstract: 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 also analyse the global causal structure and the viability of the model.
Comments: 5 pages, 2 figures
Subjects: General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
Cite as: arXiv:2404.12243 [gr-qc]
  (or arXiv:2404.12243v1 [gr-qc] for this version)

Submission history

From: Michał Bobula [view email]
[v1] Thu, 18 Apr 2024 15:05:09 GMT (72kb)

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