Fundamental decoherence from quantum spacetime
General Relativity and Quantum Cosmology
2023-01-27 v2 High Energy Physics - Theory
Quantum Physics
Abstract
We show that quantum properties of spacetime, encoded by noncommutativity at the Planck scale, lead to a generalized time evolution of quantum systems in which pure states can evolve into mixed states. Specifically, a decoherence mechanism is obtained in the form of a Lindblad-like time evolution for the density operator when the action of time translations generator is deformed by the effects of spacetime noncommutativity. The decoherence time for the evolution of a free particle is used to show that the Planck mass is the maximum allowed mass for elementary quantum systems.
Cite
@article{arxiv.2208.14119,
title = {Fundamental decoherence from quantum spacetime},
author = {Michele Arzano and Vittorio D'Esposito and Giulia Gubitosi},
journal= {arXiv preprint arXiv:2208.14119},
year = {2023}
}
Comments
v2 matches the version accepted for publication in Communications Physics