Type of Work

Article

Date

2002

Journal Title

New Journal of Physics

Journal ISSN

1367-2630

Journal Volume

4

First Page

57.1

Last Page

57.18

DOI

10.1088/1367-2630/4/1/357

Abstract

Using a form of modified dispersion relations derived in the context of quantum geometry, we investigate limits set by current observations on potential corrections to Lorentz invariance. We use a phenomological model in which there are separate parameters for photons, leptons and hadrons. Constraints on these parameters are derived using thresholds for the processes of photon stability, photon absorption, vacuum Cerenkov radiation, pion stability and the GZK cutoff. Although the allowed region in parameter space is tightly constrained, non-vanishing corrections to Lorentz symmetry due to quantum geometry are consistent with current astrophysical observations.

Notes

This document is the publisher's version of an article published in:

New Journal of Physics., vol. 4, (2002): 57:1-18, doi: 10.1088/1367-2630/4/1/357

Hamilton Areas of Study

Physics