Lorentz violation at high energy: Concepts, phenomena, and astrophysical constraints

By T. Jacobson, Stefano Liberati, D. Mattingly. 2005

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Abstract We consider here the possibility of quantum gravity induced violation of Lorentz symmetry (LV). Even if suppressed by the inverse Planck mass such LV can be tested by current experiments and astrophysical observations. We review the effective field theory approach to describing LV, the issue of naturalness, and many phenomena characteristic of LV. We discuss some of the current observational bounds on LV, focusing mostly on those from high energy astrophysics in the QED sector at order E/MPlanck. In this context, we present a number of new results which include the explicit computation of rates of the most relevant LV processes, the derivation of a new photon decay constraint, and modification of previous constraints taking proper account of the helicity dependence of the LV parameters implied by effective field theory.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/f8c31018142ff9cc2a8f206f31f04b29be66a311

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Citations in the corpus

Modern Tests of Lorentz Invariance (2005, methodology): “Further information on copyright is given at http://relativity.livingreviews.org/About/copyright.html For permission to reproduce the article please contact livrev@aei.mpg.de.”
Quantum gravity without Lorentz invariance (2009, background): “Since the ultraviolet dominant part of the Lorentz breaking is sixth order in momenta, it neatly evades all current bounds on Lorentz symmetry breaking [43, 44, 45].”
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Planck-scale modified dispersion relations and Finsler geometry (2006, background): “[20]) it is interesting to note that these are generally requiring to choose a well defined dynamical framework.”
Tests of Lorentz invariance: a 2013 update (2013, background): “Just above threshold, this process is also extremely efficient, with a timescale of order τVC ∼ 10−9 s [82].”
Zakopane lectures on loop gravity (2011, neutral): “See [134, 135, 1]].”
The Spin-Foam Approach to Quantum Gravity (2012, background): “This question has received lots of attention in recent years as it seems to provide an open window of opportunity for observations of quantum gravity effects (see [270, 233] and references therein).”