Lorentz-violating dispersion relations and threshold analyses

Details Lorentz-violating dispersion relations and threshold analyses Lorentz-violating dispersion relations and threshold analyses

2004-02-12

arxiv.org/abs/hep-ph/0402133v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, invited talk presented at the 3rd International Symposium on Quantum Theory and Symmetries (QTS3), Cincinnati, Ohio,

Scientific paper

Remnant low-energy effects of Planck-scale Lorentz breaking in candidate fundamental theories typically include modified one-particle dispersion relations. Theoretical constraints on such modifications are discussed leading to the exclusion of a variety of previously considered Lorentz-violating parameters. In particular, the fundamental principle of coordinate independence, the role of an effective dynamical framework, and the conditions of positivity and causality are investigated.

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