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arXiv · 1902.03378

Unitarity in Reissner-Nordstr\"{o}m background: striding away from information loss

Arpit Das·Narayan Banerjee
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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-Nordstr\"om) 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 Schr\"{o}dinger-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.

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Arpit Das, Narayan Banerjee. 2019-02-09. Unitarity in Reissner-Nordstr\"{o}m background: striding away from information loss. https://doi.org/10.1140/epjc%2Fs10052-019-6991-1

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