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arXiv · 1707.02585

Quantum gravitational collapse as a Dirac particle on the half-line

Syed Moeez Hassan·Viqar Husain·Jonathan Ziprick
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Abstract

We show that the quantum dynamics of a thin spherical shell in general relativity is equivalent to the Coulomb-Dirac equation on the half line. The Hamiltonian has a one-parameter family of self-adjoint extensions with a discrete energy spectrum $|E| < m$, and a continuum of scattering states for $|E|>m$, where $m$ is the rest mass of the shell and $E$ is the Arnowitt-Deser-Misner mass. For sufficiently large $m$, the ground state energy level is negative. This suggests that classical positivity of energy does not survive quantization. The scattering states provide a realization of singularity avoidance. We speculate on the consequences of these results for black hole radiation.

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Syed Moeez Hassan, Viqar Husain, Jonathan Ziprick. 2017-07-09. Quantum gravitational collapse as a Dirac particle on the half-line. https://doi.org/10.1103/physrevd.97.104032

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