Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells

Abstract In this article, we explicitly construct the coordinates associated with the Penrose diagram in spacetimes connected via a spacelike thin shell in the following two examples: the generalized black-to-white hole bounce with mass difference and the Schwarzschild-to-de Sitter transition. We po...

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Main Authors: Wei-Chen Lin, Dejan Stojkovic, Dong-han Yeom
Format: Article
Language:English
Published: Nature Portfolio 2024-11-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-024-79540-7
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author Wei-Chen Lin
Dejan Stojkovic
Dong-han Yeom
author_facet Wei-Chen Lin
Dejan Stojkovic
Dong-han Yeom
author_sort Wei-Chen Lin
collection DOAJ
description Abstract In this article, we explicitly construct the coordinates associated with the Penrose diagram in spacetimes connected via a spacelike thin shell in the following two examples: the generalized black-to-white hole bounce with mass difference and the Schwarzschild-to-de Sitter transition. We point out the issue of the first junction condition in the Penrose diagram constructed by cutting and pasting analytically known metrics with spherical symmetry by a static spacelike thin shell. With the goal of a global conformal coordinate chart associated with the corresponding Penrose diagram without discontinuity at the thin shell, we give a procedure consisting of three conformal transformations that serve different purposes. The first two of them are used to generate a continuous coordinate patch covering the entire thin shell, and therefore, the Penrose diagram can be constructed properly by patches with overlapping. The third transformation removes any coordinate singularity reintroduced by the first two transformations at the event horizons.
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spelling doaj-art-f63b8760143f4e598b30ca718313e9a52024-11-17T12:20:41ZengNature PortfolioScientific Reports2045-23222024-11-0114112610.1038/s41598-024-79540-7Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shellsWei-Chen Lin0Dejan Stojkovic1Dong-han Yeom2Center for Cosmological Constant Problem, Extreme Physics Institute, Pusan National UniversityHEPCOS, Department of PhysicsCenter for Cosmological Constant Problem, Extreme Physics Institute, Pusan National UniversityAbstract In this article, we explicitly construct the coordinates associated with the Penrose diagram in spacetimes connected via a spacelike thin shell in the following two examples: the generalized black-to-white hole bounce with mass difference and the Schwarzschild-to-de Sitter transition. We point out the issue of the first junction condition in the Penrose diagram constructed by cutting and pasting analytically known metrics with spherical symmetry by a static spacelike thin shell. With the goal of a global conformal coordinate chart associated with the corresponding Penrose diagram without discontinuity at the thin shell, we give a procedure consisting of three conformal transformations that serve different purposes. The first two of them are used to generate a continuous coordinate patch covering the entire thin shell, and therefore, the Penrose diagram can be constructed properly by patches with overlapping. The third transformation removes any coordinate singularity reintroduced by the first two transformations at the event horizons.https://doi.org/10.1038/s41598-024-79540-7
spellingShingle Wei-Chen Lin
Dejan Stojkovic
Dong-han Yeom
Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells
Scientific Reports
title Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells
title_full Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells
title_fullStr Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells
title_full_unstemmed Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells
title_short Explicit construction of Penrose diagrams for black hole to white hole transition with spacelike thin shells
title_sort explicit construction of penrose diagrams for black hole to white hole transition with spacelike thin shells
url https://doi.org/10.1038/s41598-024-79540-7
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