Evidence for Planck luminosity bound in quantum gravity

Wieland W (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Classical and Quantum Gravity Institute of Physics: Hybrid Open Access

Book Volume: 42

Article Number: 06LT01

Journal Issue: 6

DOI: 10.1088/1361-6382/adb536

Abstract

Recently, we introduced a non-perturbative quantization of impulsive gravitational null initial data. In this note, we investigate an immediate physical implication of the model. One of the quantum numbers is the total luminosity carried to infinity. We show that a transition happens when the luminosity reaches the Planck power LP. Below LP, the spectrum of the radiated power is discrete. Above the Planck power, the spectrum is continuous. A physical state that lies in the continuous spectrum consists of a superposition of kinematical states in which the shear is unbounded from above. We argue that such states are unphysical because they contain caustics that are in conflict with the falloff conditions at asymptotic infinity.

Authors with CRIS profile

Wolfgang Wieland Chair for Theoretical Physics III (Quantum Gravity)

How to cite

APA:

Wieland, W. (2025). Evidence for Planck luminosity bound in quantum gravity. Classical and Quantum Gravity, 42(6). https://doi.org/10.1088/1361-6382/adb536

MLA:

Wieland, Wolfgang. "Evidence for Planck luminosity bound in quantum gravity." Classical and Quantum Gravity 42.6 (2025).

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