Probing quantum decoherence with high-energy neutrinos

We consider the prospects for observing the effects of quantum decoherence in high-energy (TeV-PeV) neutrinos from astrophysical sources. In particular, we study galactic sources of electron antineutrinos produced in the decay of ultra-high energy neutrons. We find that next generation neutrino telescopes should be capable of placing limits on quantum decoherence effects over multi-kiloparsec baselines, surpassing current bounds by a factor of 1012 to 1033, depending on the model considered. (c) 2005 Elsevier B.V. All rights reserved.