Probing the Planck scale with neutrino oscillations

Ram Brustein, David Eichler, and Stefano Foffa
Phys. Rev. D 65, 105006 – Published 24 April 2002
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Abstract

Quantum gravity “foam,” among its various generic Lorentz noninvariant effects, would cause neutrino mixing. It is shown here that, if the foam is manifested as a nonrenormalizable effect at scale M, the oscillation length generically decreases with energy E as (E/M)2. Neutrino observatories and long-baseline experiments should have therefore already observed foam-induced oscillations, even if M is as high as the Planck energy scale. The null results, which can be further strengthened by better analysis of current data and future experiments, can be taken as experimental evidence that Lorentz invariance is fully preserved at the Planck scale, as is the case in critical string theory.

  • Received 27 June 2001

DOI:https://doi.org/10.1103/PhysRevD.65.105006

©2002 American Physical Society

Authors & Affiliations

Ram Brustein*, David Eichler, and Stefano Foffa

  • Department of Physics, Ben-Gurion University, Beer-Sheva 84105, Israel

  • *Email address: ramyb@bgumail.bgu.ac.il
  • Email address: eichler@bgumail.bgu.ac.il
  • Email address: foffa@bgumail.bgu.ac.il

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Issue

Vol. 65, Iss. 10 — 15 May 2002

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