Fundamental decoherence from quantum spacetime
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 fo...
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Main Authors | , , |
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Format | Journal Article |
Language | English |
Published |
30.08.2022
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Subjects | |
Online Access | Get full text |
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Summary: | 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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DOI: | 10.48550/arxiv.2208.14119 |