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Dynamical Lorentz symmetry breaking in a 4D massless four-fermion model (1707.07778v2)
Published 25 Jul 2017 in hep-th
Abstract: In this paper, we study the spontaneous Lorentz symmetry breaking for a four-dimensional massless four-fermion model. Our methodology is based on use of the rationalized propagator. We show that a bumblebee potential arises as a result of one-loop calculations and displays nontrivial minima. Also we demonstrate that a phase transition restoring Lorentz invariance can occur at a finite temperature.
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