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Astrophysics > Cosmology and Nongalactic Astrophysics

arXiv:1307.6946 (astro-ph)
[Submitted on 26 Jul 2013]

Title:Tests of the Lorentz and CPT Symmetries at the Planck Energy Scale with X-Ray and Gamma-Ray Observations

Authors:Henric Krawczynski, Fabian Kislat, Matthias Beilicke, Anna Zajczyk (Washington University in St. Louis)
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Abstract:X-ray and gamma-ray observations of astrophysical objects at cosmological distances can be used to probe the energy dependence of the speed of light with high accuracy and to search for violations of Lorentz invariance and CPT symmetry at the Planck energy scale. In this conference contribution, we discuss these searches in the theoretical framework of the Standard-Model Extension. We present new limits on the dispersion relation governed by operators of mass dimension d=5 and d=6, and we discuss avenues for future progress.
Comments: Contribution to the Proceedings of the Sixth Meeting on CPT and Lorentz Symmetry, Indiana University in Bloomington, Indiana, U.S.A., June 17-21, 2013. Four pages, two figures
Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Astrophysical Phenomena (astro-ph.HE); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1307.6946 [astro-ph.CO]
  (or arXiv:1307.6946v1 [astro-ph.CO] for this version)
  https://doi.org/10.48550/arXiv.1307.6946

Submission history

From: Henric Krawczynski [view email]
[v1] Fri, 26 Jul 2013 07:49:38 UTC (512 KB)
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