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arXiv · 2311.06068

Long-range correlations of the stress tensor near the Cauchy horizon

Christiane Klein·Jochen Zahn
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Abstract

We show that the stress tensor of a real scalar quantum field on Reissner-Nordstr{\"o}m-de Sitter spacetime exhibits correlations over macroscopic distances near the Cauchy horizon. These diverge as the Cauchy horizon is approached and are universal, i.e., state-independent. This signals a breakdown of the semi-classical approximation near the Cauchy horizon. We also investigate the effect of turning on a charge of the scalar field and consider the correlation of the stress tensor between the two poles of the Cauchy horizon of Kerr-de Sitter spacetime.

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Christiane Klein, Jochen Zahn. 2023-11-10. Long-range correlations of the stress tensor near the Cauchy horizon. https://doi.org/10.1103/physrevd.109.l061702

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