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Lorentz violation for photons and ultrahigh-energy cosmic rays |
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| Authors: | Galaverni Matteo Sigl Günter |
| Affiliation: | INAF-IASF Bologna, via Gobetti 101, I-40129 Bologna, Italy. |
| Abstract: | Lorentz symmetry breaking at very high energies may lead to photon dispersion relations of the form omega2=k2+xink2(k/MPl)n with new terms suppressed by a power n of the Planck mass MPl. We show that first and second order terms of size |xi1|>orsimilar10(-14) and xi2 |
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