2010/10/31 by Brett Altschul
Medicine · Physics and Astronomy · #Black Holes and Theoretical Physics #Neuroblastoma Research and Treatments #Noncommutative and Quantum Gravity Theories #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.83.056012
published as Phys.Rev.D83:056012,2011 · New title, 12 pages, version to appear in Phys. Rev. D
arxiv created 2011/03/17 · openalex publication_date 2011/03/23 · arxiv updated 2011/05/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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\ifmmode×\else\texttimes\fi10^\ensuremath-13 to 6\ifmmode×\else\texttimes\fi10^\ensuremath-33 (GeV)^\ensuremath-1 levels.