Unitarity in Reissner-Nordström background: striding away from information loss
arXiv:1902.03378 · doi:10.1140/epjc/s10052-019-6991-1
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.
arXiv comment11 pages, no figure. Some clarifications. Main results unchanged
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- Formation of the Hayward black hole from a collapsing shell
- Quantum radiation of a collapsing shell in three-dimensional AdS spacetime revisited
- Unitarity in quantum cosmology: symmetries protected and violated