Constraining Lorentz Invariance Violation with Fermi

Details Constraining Lorentz Invariance Violation with Fermi Constraining Lorentz Invariance Violation with Fermi

2010-02-01

arxiv.org/abs/1002.0349v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Proceedings for the 2009 Fermi Symposium. eConf Proceedings C091122

Scientific paper

A cornerstone of special relativity is Lorentz Invariance, the postulate that all observers measure exactly the same photon speeds independently on the photon energies. However, a hypothesized structure of spacetime may alter this conclusion at ultra-small length scales, a possibility allowed in many of the Quantum-Gravity (QG) formalisms currently investigated. A generalized uncertainty principle suggests that such effects might occur for photon energies approaching the Planck energy, $E_{Planck}=M_{Planck} c^2 \simeq 1.22\times10^{19} GeV$. Even though all photons yet detected have energies $E_{ph}<

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