Interior metric and ray-tracing map in the firework black-to-white hole transition

Abstract

The possibility that a black hole could tunnel into a white hole has recently received attention. Here we present a metric that improves the 'firework' metric: it describes the entire process and solves the Einstein equations everywhere except on a small transition surface that corresponds to the quantum tunnelling. We compute the corresponding ray-tracing map from past infinity to future infinity explicitly.

arXiv comment5 pages, 10 figures

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• Effective black-to-white hole bounces: The cost of surgery
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