Is the Universe transparent to TeV photons?
Astrophysics
2007-05-23 v1
Abstract
If Lorentz invariance is broken at an energy scale Eq, as has recently been suggested in the context of attempts to quantize gravity, the kinematics of photon-photon collisions would be profoundly affected at lower energies. Specifically, electron-positron pair creation on soft photons may be forbidden at photon energies as low as 30 TeV times square root of (Eq/10**17 GeV) and the Universe would then be transparent to high energy photons. The proposition that Lorentz invariance is broken may be falsified by the techniques of TeV astronomy.
Cite
@article{arxiv.astro-ph/9905308,
title = {Is the Universe transparent to TeV photons?},
author = {W. Kluzniak},
journal= {arXiv preprint arXiv:astro-ph/9905308},
year = {2007}
}
Comments
To appear in 8th Internatinal Workshop on "Neutrino Telescopes", Milla Baldo Ceolin ed., held February 23-26, 1999, in Venice. 4 pgs