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• W3141548361 abstract "In this paper, an open quantum system theory for spinfoams is developed. This new formalism aims at deriving an effective Lindblad equation to compute the reduced dynamics of a quantum gravitational field. The system parameters are determined from numerical ab initio calculations, based on the spinfoam formalism. This theoretical proposal is illustrated by means of examples. The decoherence effect can induce the relaxation of the quantum gravitational state toward a sate of a small area. This is analogue to the well-known Purcell relaxation of QED, for which the qubits are replaced by the spin-network representation of the gravitational field. Some thermodynamic properties of these systems are computed, and several issues with the thermal time hypothesis are underlined. Moreover, the results suggest that further approximations can be performed to study reduced dynamics of quantum space-time." @default.
• W3141548361 created "2021-04-13" @default.
• W3141548361 creator A5049452351 @default.
• W3141548361 date "2021-04-01" @default.
• W3141548361 modified "2023-09-27" @default.
• W3141548361 title "A model of spinfoam coupled with an environment" @default.
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• W3141548361 doi "https://doi.org/10.1007/s10714-021-02811-5" @default.
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