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arXiv · 2208.14119

Fundamental decoherence from quantum spacetime

Michele Arzano·Vittorio D'Esposito·Giulia Gubitosi
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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.

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Michele Arzano, Vittorio D'Esposito, Giulia Gubitosi. 2022-08-30. Fundamental decoherence from quantum spacetime. https://arxiv.org/abs/2208.14119

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