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Infinitesimally Nonlocal Lorentz Violation

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arxiv hep-th/0412113 v1 pith:3WND5RDR submitted 2004-12-10 hep-th

Infinitesimally Nonlocal Lorentz Violation

classification hep-th
keywords interactionlorentz-violatingtheorylorentznonlocalviolationalthoughanalyze
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We introduce a new Lorentz-violating modification to a scalar quantum field theory. This interaction, while super-renormalizable by power counting, is fundamentally different from the interactions previously considered within the Lorentz-violating standard model extension. The Lagrange density is nonlocal, because of the presence of a Hilbert transform term; however, this nonlocality is also very weak. The theory has reasonable stability and causality properties and, although the Lorentz-violating interaction possesses a single vector index, the theory is nonetheless CPT even. As an application, we analyze the possible effects of this new form of Lorentz violation on neutral meson oscillations. We find that under certain circumstances, the interaction may lead to quite peculiar sidereal modulations in the oscillation frequency.

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  1. Induced CFJ Term in nonlocal Lorentz-Violating QED: Natural Regularization from Entire Dirac Operators

    hep-th 2026-07 conditional novelty 5.0

    In nonlocal Lorentz-violating QED with entire form factors of the Dirac operator, the induced CFJ coefficient is finite and equals the local value times a deformation function of m/Λ.