The scrambling power of gravity in black hole radiation

• URL: http://arxiv.org/abs/2304.12278v3
• Date: Wed, 15 Oct 2025 14:20:12 GMT
• Title: The scrambling power of gravity in black hole radiation
• Authors: Xuan-Lin Su, Alioscia Hamma, Antonino Marciano,
• Abstract summary: We show that the presence of soft degrees of freedom induces scrambling of information encoded in hard degrees of freedom.<n>This lays the groundwork for a deeper understanding of the black hole information paradox.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The black hole information paradox remains a profound challenge in theoretical physics. Among the proposed resolutions, the soft-hair approach stands out for its independence from any specific quantum gravity model. In this paper, we investigate how the inclusion of soft degrees of freedom in the unitary evolution of quantum electrodynamics, within a spacetime collapsing into a Reissner-Nordstrom black hole, leads to information scrambling. By evaluating the tripartite mutual information of this unitary evolution, we estimate the degree of information scrambling in the corresponding quantum channel. Our results show that the presence of soft degrees of freedom induces scrambling of information initially encoded in hard degrees of freedom, driven by quantum electrodynamics interactions and the nontrivial transformations arising from the non-uniqueness of the vacuum in the collapsing spacetime. This lays the groundwork for a deeper understanding of the black hole information paradox, particularly the mechanisms behind information scrambling.

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