Hayward 黑洞坍缩中的宇宙膨胀防止奇点形成
摘要
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.
引用
@article{arxiv.2404.12243,
title = {Cosmic inflation prevents singularity formation in collapse into a Hayward black hole},
author = {Michał Bobula},
journal= {arXiv preprint arXiv:2404.12243},
year = {2025}
}
备注
v3: Accepted for publication in Classical and Quantum Gravity. The title was changed, minor modifications were made to the main text, the appendices were moved to the main text, and Figure 2 was expanded to include the classical OS collapse scenario