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Dynamical Lorentz symmetry breaking in a tensor bumblebee model

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arxiv 1902.10592 v2 pith:BPM2VRBN submitted 2019-02-27 hep-th

J. F. Assunção , T. Mariz , J. R. Nascimento , A. Yu. Petrov This is my paper · ORCID
classification hep-th
keywords tensorbreakingdynamicalfieldlorentzsymmetryantisymmetricdefined
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In this paper, we formulate a theory of the second-rank antisymmetric (pseudo)tensor field minimally coupled to a spinor, calculate the one-loop effective potential of the (pseudo)tensor field, and, explicitly, demonstrate that it is positively defined and possesses a continuous set of minima, both for tensor and pseudotensor cases. Therefore, our model turns out to display the dynamical Lorentz symmetry breaking. We also argue that, contrarily to the derivative coupling we use here, derivative-free couplings of the antisymmetric tensor field to a spinor do not generate the positively defined potential and thus do not allow for the dynamical Lorentz symmetry breaking.

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Cited by 4 Pith papers

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    A generalized propagation parameterization for gravitational-wave strains is extended to O(H²) and O(H′), then mapped to Kalb-Ramond, axion-dilaton–Chern-Simons–Gauss-Bonnet, and U(1) dark-photon models.

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