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

Abstract

We show that the stress tensor of a real scalar quantum field on Reissner-Nordstr{ö}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.

5 pages, 4 figures, version as published in PRD

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Cited by in corpus (1)

• Backreaction from quantum fluxes at the Kerr inner horizon