Unitarity in Reissner-Nordström background: striding away from information loss

Abstract

We have shown analytically that radiation from a collapsing shell which leads to a charged black hole, whose exterior is described by the RN (Reissner-Nordström) metric (and hence the background spacetime is non-globally hyperbolic), is processed with a unitary evolution. For the analysis, we have used the Wheeler-deWitt formalism which in turn gave rise to a Schrödinger-like wave equation. We showed the existence of unitarity by proving that the trace of the squared density matrix of the outgoing radiation, from a quantized massless scalar field, is unity and that the conservation of probability holds for the wave function of the system.

11 pages, no figure. Some clarifications. Main results unchanged

References in corpus (3)

• Observation of Incipient Black Holes and the Information Loss Problem
• Restoring unitarity in anisotropic quantum cosmological models
• Addressing the issue of non-unitarity in anisotropic quantum cosmology

Cited by in corpus (1)

• Hawking emission of charged particles from an electrically charged spherical black hole with scalar hair