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Quantum Gravity Phenomenology and Lorentz Violation
Published 15 Apr 2004 in gr-qc, hep-ph, and hep-th | (0404067v1)
Abstract: If quantum gravity violates Lorentz symmetry, the prospects for observational guidance in understanding quantum gravity improve considerably. This article briefly reviews previous work on Lorentz violation (LV) and discusses aspects of the effective field theory framework for parametrizing LV effects. Current observational constraints on LV are then summarized, focusing on effects in QED at order E/M_Planck.
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