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arXiv · 1409.8181

Modified energy-momentum conservation laws and vacuum Cherenkov radiation

J. M. Carmona·J. L. Cortes·B. Romeo
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Abstract

We present a general parametrization for the leading order terms in a momentum power expansion of a non-universal Lorentz-violating, but rotational invariant, kinematics and its implications for two-body decay thresholds. The considered framework includes not only modified dispersion relations for particles, but also modified energy-momentum conservation laws, something which goes beyond effective field theory. As a particular and relevant example, bounds on the departures from special relativistic kinematics from the non-observation of vacuum Cherenkov radiation are discussed and compared with those obtained within the effective field theory scenario.

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J. M. Carmona, J. L. Cortes, B. Romeo. 2014-09-29. Modified energy-momentum conservation laws and vacuum Cherenkov radiation. https://doi.org/10.1016/j.astropartphys.2015.04.009

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