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Fermion effective dispersion relation for z=2 Lifshitz QED

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arxiv 1307.7613 v2 pith:6IZ4UQ45 submitted 2013-07-29 hep-th hep-ph

classification hep-thhep-ph
keywords correctionsdispersionlifshitzrelationspaceapproachbecausecalculating
verification ladder T0 review T1 audit T2 compute T3 formal
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We study consequences of Lorentz symmetry violation in a z=2 Lifshitz extension of QED in 3+1 dimensions, and we discuss non-trivial effects of quantization. Because of the specific power of space momentum in propagators of the model, dimensional regularization leads to an unusual interpretation of loop integrals, which are finite even when the space dimension goes to the integer 3. We check the consistency of the approach by calculating the (vanishing) corrections to the photon mass and the IR-divergence-free corrections to the dispersion relation for massless fermions.

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