Black hole evaporation and semiclassical thin shell collapse

Valentina Baccetti, Sebastian Murk, Daniel R. Terno

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    13 Citations (Scopus)
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    Abstract

    In case of spherical symmetry, the assumptions of finite-time formation of a trapped region and regularity of its boundary—the apparent horizon—are sufficient to identify the form of the metric and energy-momentum tensor in its vicinity. By comparison with the known results for quasistatic evaporation of black holes, we complete the identification of their parameters. Consistency of the Einstein equations allows only two possible types of higher-order terms in the energy-momentum tensor. By using its local conservation, we provide a method of calculation of the higher-order terms, explicitly determining the leading-order regular corrections. Contraction of a spherically symmetric thin dust shell is the simplest model of gravitational collapse. Nevertheless, the inclusion of a collapse-triggered radiation in different extensions of this model leads to apparent contradictions. Using our results, we resolve these contradictions and show how gravitational collapse may be completed in finite time according to a distant observer.
    Original languageEnglish
    Article number064054
    Pages (from-to)1-11
    Number of pages11
    JournalPhysical Review D: covering particles, fields, gravitation, and cosmology
    Volume100
    Issue number6
    DOIs
    Publication statusPublished - 26 Sep 2019

    Bibliographical note

    Copyright 2019 American Physical Society. Firstly published in Physical Review D, 100(6), 064054. The original publication is available at https://doi.org/10.1103/PhysRevD.100.064054. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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