Proposed astrophysical test of Lorentz invariance

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dc.creatorBertolami, O.
dc.creatorCarvalho, C. S.
dc.date1999-12-29
dc.date2000-03-14
dc.date.accessioned2026-07-07T11:08:49Z
dc.date.available2026-07-07T11:08:49Z
dc.descriptionWorking in the context of a Lorentz-violating extension of the standard model we show that estimates of Lorentz symmetry violation extracted from ultra-high energy cosmic rays beyond the Greisen-Kuzmin-Zatsepin (GZK) cutoff allow for setting bounds on parameters of that extension. Furthermore, we argue that a correlated measurement of the difference in the arrival time of gamma-ray photons and neutrinos emitted from active galactic nuclei or gamma-ray bursts may provide a signature of possible violation of Lorentz symmetry. We have found that this time delay is energy independent, however it has a dependence on the chirality of the particles involved. We also briefly discuss the known settings where the mechanism for spontaneous violation of Lorentz symmetry in the context of string/M-theory may take place.
dc.descriptionTypos corrected. Version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/gr-qc/9912117
dc.identifierhttp://arxiv.org/abs/gr-qc/9912117
dc.identifierPhys.Rev.D61:103002,2000
dc.identifierdoi:10.1103/PhysRevD.61.103002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190263
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleProposed astrophysical test of Lorentz invariance
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