Threshold analyses and Lorentz violation

Abstract

In the context of threshold investigations of Lorentz violation, we discuss the fundamental principle of coordinate invariance, the role of an effective dynamical framework, and the conditions of positivity and causality. Our analysis excludes a variety of previously considered Lorentz-breaking parameters and opens an avenue for viable dispersion-relation investigations of Lorentz violation.

9 pages

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• Classical-physics applications for Finsler $b$ space
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• Astrophysical Bounds on Planck Suppressed Lorentz Violation
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• Exact modifications on a vacuum spacetime due to a gradient bumblebee field at its vacuum expectation value
• Bounds on Lorentz and CPT Violation from the Earth-Ionosphere Cavity
• Constraining CPT-odd nonminimal interactions in the Electroweak sector
• Tests of Lorentz Violation in Atomic and Optical Physics
• Non-relativistic electron-electron interaction in a Maxwell-Chern-Simons-Proca model endowed with a timelike Lorentz-violating background
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• Electron-electron interaction in a MCS model with a purely spacelike Lorentz-violating background
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• Comparison of QG-Induced Dispersion with Standard Physics Effects
• Electrodynamics Modified by Some Dimension-five Lorentz Violating Interactions: Radiative Corrections
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