A tight constraint on some varying speed of light theories

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dc.creatorShariati, Ahmad
dc.creatorJafari, Nosratollah
dc.date2005-02-15
dc.date.accessioned2026-07-07T03:29:24Z
dc.date.available2026-07-07T03:29:24Z
dc.descriptionWe argue that if the velocity of electromagnetic waves in vacuum, \cem, is different from the limiting velocity for massive particles, \cst, then, a proton moving with velocity $\cem < v < \cst$ would radiate Cherenkov radiation. Because we have seen protons with energy $\sim 10^{19}$ eV coming from a distance of order more than 1 Mpc, we can put a constraint on $Δ:= (\cst - \cem)/\cst$: $Δ< 10^{-27}$.
dc.description3 pages
dc.identifierhttps://arxiv.org/abs/gr-qc/0502071
dc.identifierhttp://arxiv.org/abs/gr-qc/0502071
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/35203
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleA tight constraint on some varying speed of light theories
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