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Extending the GKZ limit without breaking Lorentz Invariance

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arxiv hep-th/0702208 v1 pith:JEA4CYUX submitted 2007-02-27 hep-th

Extending the GKZ limit without breaking Lorentz Invariance

classification hep-th
keywords limitbreakinginvariancelorentzwithoutcalledchangedcosmic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A scenario is presented on how to shift the predicted cutoff in the cosmic ray spectrum at 10**20 eV, called the Greisen-Zatsepin-Kuzmin limit (GKZ), to larger energies without breaking the Lorentz invariance. The formulation is based on a pseudo-complex extension of standard field theory. The dispersion relation of particles can be changed, leading to a modification of the GKZ limit. Maximal shifts are determined.

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