Multiverse in Karch-Randall Braneworld
Gopal Yadav

TL;DR
This paper introduces a wedge holography model with multiple Karch-Randall branes to describe a multiverse, enabling analysis of black hole Page curves and paradox resolution in higher-dimensional spacetime.
Contribution
It proposes a novel multiverse model using wedge holography with multiple branes, extending previous holographic frameworks to include complex multiverse scenarios.
Findings
Derived Page curves for multiverse black holes
Resolved the grandfather paradox in a holographic context
Analyzed black holes with multiple horizons in the model
Abstract
In this paper, we propose a model based on wedge holography that can describe the multiverse. In wedge holography, we consider two gravitating baths, one of which has strong gravity and the other one has weak gravity. To describe a multiverse, we consider Karch-Randall branes, and we propose that various -dimensional universes are localized on these branes. These branes are embedded in -dimensional spacetime. The model is useful in obtaining the Page curve of black holes with multiple horizons and in the resolution of the ``grandfather paradox''. We explicitly obtain the Page curves of eternal AdS black holes for multiverse and Schwarzschild de-Sitter black hole with two horizons.
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Taxonomy
TopicsBlack Holes and Theoretical Physics · Astrophysical Phenomena and Observations · Cosmology and Gravitation Theories
