Modified energy–momentum conservation laws and vacuum Cherenkov radiation

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 p...

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Bibliographic Details
Published inAstroparticle physics Vol. 71; pp. 21 - 30
Main Authors Carmona, J.M., Cortés, J.L., Romeo, B.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2015
Subjects
Astrophysical tests of Lorentz invariance
Beyond special relativity
Quantum gravity phenomenology
Quantum gravity phenomenology
Astrophysical tests of Lorentz invariance
Beyond special relativity
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Summary: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.
ISSN:0927-6505
1873-2852
DOI:10.1016/j.astropartphys.2015.04.009