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Aspects of Causality and Unitarity and Comments on Vortex-like Configurations in an Abelian Model with a Lorentz-Breaking Term

A. P. Baeta Scarpelli·H. Belich·J. L. Boldo·J. A. Helayel-Neto
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Abstract

The gauge-invariant Chern-Simons-type Lorentz- and CPT-breaking term is here reassessed and a spin-projector method is adopted to account for the breaking (vector) parameter. Issues like causality, unitarity, spontaneous gauge-symmetry breaking and vortex formation are investigated, and consistency conditions on the external vector are identified.

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A. P. Baeta Scarpelli, H. Belich, J. L. Boldo, J. A. Helayel-Neto. 2003-01-11. Aspects of Causality and Unitarity and Comments on Vortex-like Configurations in an Abelian Model with a Lorentz-Breaking Term. https://doi.org/10.1103/physrevd.67.085021

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