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Spacetime and Deformations of Special Relativistic Kinematics

Departamento de Física Teórica and Centro de Astropartículas y Física de Altas Energías (CAPA), Universidad de Zaragoza, 50009 Zaragoza, Spain
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Symmetry 2019, 11(11), 1401; https://doi.org/10.3390/sym11111401
Received: 28 September 2019 / Revised: 5 November 2019 / Accepted: 7 November 2019 / Published: 12 November 2019
(This article belongs to the Special Issue Symmetry and Quantum Gravity)
A deformation of special relativistic kinematics (possible signal of a theory of quantum gravity at low energies) leads to a modification of the notion of spacetime. At the classical level, this modification is required when one considers a model including single- or multi-interaction processes, for which absolute locality in terms of canonical spacetime coordinates is lost. We discuss the different alternatives for observable effects in the propagation of a particle over very large distances that emerge from the new notion of spacetime. A central ingredient in the discussion is the cluster decomposition principle, which can be used to favor some alternatives over the others. View Full-Text
Keywords: quantum gravity; Lorentz invariance violation; deformed special relativity; photon time delays quantum gravity; Lorentz invariance violation; deformed special relativity; photon time delays
MDPI and ACS Style

Carmona, J.M.; Cortés, J.L.; Relancio, J.J. Spacetime and Deformations of Special Relativistic Kinematics. Symmetry 2019, 11, 1401.

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