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Modeling-free bounds on nonrenormalizable isotropic Lorentz and CPT violation in QED

Brett Altschul*

  • Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA

  • *baltschu@physics.sc.edu
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Phys. Rev. D 83, 056012 – Published 23 March, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.056012

Abstract

The strongest bounds on some forms of Lorentz and CPT violation come from astrophysical data, and placing such bounds may require understanding and modeling distant sources of radiation. However, it is also desirable to have bounds that do not rely on these kinds of detailed models. Bounds that do not rely on any modeling of astrophysical objects may be derived both from laboratory experiments and certain kinds of astrophysical observations. The strongest such bounds on isotropic modifications of electron, positron, and photon dispersion relations of the form E2=p2+m2+ϵp3 come from data on cosmological birefringence, the absence of photon decay, and radiation from lepton beams. The bounds range in strength from the 4×10−13 to 6×10−33  (GeV)−1 levels.

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Phys. Rev. D 83, 056012– Published 23 March, 2011
  • Received 25 October 2010

© 2011 American Physical Society

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