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- W1931566119 abstract "In this letter, we describe a general mechanism for emergence of a rainbow metric from a quantum cosmological model. This idea is based on QFT on a quantum space-time. Under general assumptions, we discover that the quantum space-time on which the field propagates can be replaced by a classical space-time, whose metric depends explicitly on the energy of the field: as shown by an analysis of dispersion relations, quanta of different energy propagate on different metrics, similar to photons in a refractive material (hence the name rainbow used in the literature). In deriving this result, we do not consider any specific theory of quantum gravity: the qualitative behavior of high-energy particles on quantum space-time relies only on the assumption that the quantum space-time is described by a wave-function $Psi_o$ in a Hilbert space $mathcal{H}_G$." @default.
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- W1931566119 date "2015-12-01" @default.
- W1931566119 modified "2023-10-16" @default.
- W1931566119 title "Rainbow metric from quantum gravity" @default.
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- W1931566119 doi "https://doi.org/10.1016/j.physletb.2015.10.043" @default.
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