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28 March 2024
 
  » arxiv » astro-ph/0205271

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Space Time Fluctuations and Ultra High Energy Cosmic Ray Interactions
R. Aloisio ; P. Blasi ; A. Galante ; P.L. Ghia ; A.F. Grillo ;
Date 16 May 2002
Journal Astropart.Phys. 19 (2003) 127-133
Subject astro-ph gr-qc
AffiliationINFN LNGS), P. Blasi (INAF Arcetri), A. Galante (Univ. L’Aquila), P.L. Ghia (CNR and INFN Torino), A.F. Grillo (INFN LNGS
AbstractThe intimate geometry of space-time is expected to suffer stochastic fluctuations as a result of quantum gravitational effects. These fluctuations may induce observable consequences on the propagation of high energy particles over large distances, so that the strength and the characteristics of these fluctuations may be constrained, mainly in the range of energies of interest for cosmic ray physics. While invoked as a possible explanation for the detection of the puzzling cosmic rays with energies in excess of the threshold for photopion production (the so-called super-GZK particles), we demonstrate here that lower energy observations may provide strong constraints on the role of a fluctuating space-time structure.
Source arXiv, astro-ph/0205271
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