Quantum Gravity Corrections to Neutrino Propagation

Jorge Alfaro, Hugo A. Morales-Técotl, and Luis F. Urrutia
Phys. Rev. Lett. 84, 2318 – Published 13 March 2000
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Abstract

Massive spin-1/2 fields are studied in the framework of loop quantum gravity by considering a state approximating, at a length scale L much greater than Planck length P, a spin-1/2 field in flat spacetime. The discrete structure of spacetime at P yields corrections to the field propagation at scale L. Neutrino bursts ( p¯105GeV) accompanying gamma ray bursts that have traveled cosmological distances L are considered. The dominant correction is helicity independent and leads to a time delay of order (p¯P)L/c104s. To next order in p¯P, the correction has the form of the Gambini and Pullin effect for photons. A dependence Los1p¯2P is found for a two-flavor neutrino oscillation length.

  • Received 27 September 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.2318

©2000 American Physical Society

Authors & Affiliations

Jorge Alfaro1,*, Hugo A. Morales-Técotl2,†, and Luis F. Urrutia3,‡

  • 1Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile
  • 2Departamento de Física, Universidad Autónoma Metropolitana Iztapalapa, A.P. 55-534, México D.F. 09340, México
  • 3Departamento de Física de Altas Energías, Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, A.P. 70-543, México D.F. 04510, México

  • *Electronic address: jalfaro@chopin.fis.puc.cl
  • Electronic address: hugo@xanum.uam.mx
  • Electronic address: me@aurora.nuclecu.unam.mx

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Issue

Vol. 84, Iss. 11 — 13 March 2000

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