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Progress of Theoretical and Experimental Physics
Article . 2024 . Peer-reviewed
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https://dx.doi.org/10.48550/ar...
Article . 2022
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Quantum Euler angles and agency-dependent space-time

Authors: G Amelino-Camelia; V D’Esposito; G Fabiano; D Frattulillo; P A Höhn; F Mercati;

Quantum Euler angles and agency-dependent space-time

Abstract

Abstract Quantum gravity is expected to introduce quantum aspects into the description of reference frames. Here we begin exploring how quantum gravity induced deformations of classical symmetries could modify the transformation laws among reference frames in an effective regime. We invoke the quantum group SUq(2) as a description of deformed spatial rotations and interpret states of a representation of its algebra as describing the relative orientation between two reference frames. This leads to a quantization of one of the Euler angles and to an aspect of agency dependence: space is reconstructed as a collection of fuzzy points, exclusive to each agent, which depends on their choice of reference frame. Each agent can choose only one direction in which points can be sharp, while points in all other directions become fuzzy in a way that depends on this choice. Two agents making different choices will thus observe the same points with different degrees of fuzziness.

Country
Italy
Keywords

Quantum Physics, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Quantization of the gravitational field, fuzziness, quantum group, Quantum Physics (quant-ph), Quantum groups and related algebraic methods applied to problems in quantum theory, reference frame, General Relativity and Quantum Cosmology, Gravitational interaction in quantum theory

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Green
gold