Unsettling physics in the quantum-corrected Schwarzschild black hole

Abstract

We study a quantum-corrected Schwarzschild black hole proposed recently in Loop Quantum Gravity. Prompted by the fact that corrections to the innermost stable circular orbit of Schwarzschild diverge, we investigate timelike and null radial geodesics. Massive particles moving radially outwards are confined, while photons make it to infinity with infinite redshift. This unsettling physics, which deviates radically from both Schwarzschild (near the horizon) and Minkowski (at infinity) is due to repulsion by the negative quantum energy density that makes the quasilocal mass vanish as one approaches spatial infinity.

12 pages, no figures, Invited paper to appear in Symmetry

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• Space-time physics in background-independent theories of quantum gravity
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• Cosmic tangle: Loop quantum cosmology and CMB anomalies
• Brans-Dicke analogue of the Roberts geometry
• Geometry of static $w=-1/5$ perfect fluid spheres in general relativity