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- W4386511240 abstract "Abstract Understanding whether quantum gravitational effects can lead to a fundamental decoherence, affecting all systems regardless of their environment, is a long standing open challenge. Here we provide a rigorous derivation of decoherence within a full-fledged model of quantum spacetime, encoded by noncommutativity at the Planck scale. Specifically, we obtain a generalized time evolution of quantum systems in which pure states can evolve into mixed states. This takes 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." @default.
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- W4386511240 date "2023-09-07" @default.
- W4386511240 modified "2023-10-16" @default.
- W4386511240 title "Fundamental decoherence from quantum spacetime" @default.
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- W4386511240 doi "https://doi.org/10.1038/s42005-023-01159-3" @default.
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