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Lorentz violation, Gravity, Dissipation and Holography

E. Kiritsis 1 
APC (UMR_7164) - AstroParticule et Cosmologie, Institut für theoretische Physik
Abstract : We reconsider Lorentz Violation (LV) at the fundamental level. We show that Lorentz Violation is intimately connected with gravity and that LV couplings in QFT must always be fields in a gravitational sector. Diffeomorphism invariance must be intact and the LV couplings transform as tensors under coordinate/frame changes. Therefore searching for LV is one of the most sensitive ways of looking for new physics, either new interactions or modifications of known ones. Energy dissipation/Cerenkov radiation is shown to be a generic feature of LV in QFT. A general computation is done in strongly coupled theories with gravity duals. It is shown that in scale invariant regimes, the energy dissipation rate depends non-triviallly on two characteristic exponents, the Lifshitz exponent and the hyperscaling violation exponent.
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Submitted on : Sunday, May 26, 2013 - 8:05:53 PM
Last modification on : Thursday, November 18, 2021 - 3:58:04 AM

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E. Kiritsis. Lorentz violation, Gravity, Dissipation and Holography. Journal of High Energy Physics, Springer, 2013, 2013, pp.30. ⟨10.1007/JHEP01(2013)030⟩. ⟨in2p3-00826108⟩



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