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arXiv · 1307.5340

Unitarity in higher-order Lorentz-invariance violating QED

Carlos M. Reyes
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Abstract

The unitarity in Lorentz invariance violating QED consisting of standard fermions and higher-order photons of the Myers-Pospelov theory is studied. We find ghost states associated to the higher-order character of the theory which could render the $S$ matrix nonunitary. An explicit calculation to check perturbative unitarity in the process of electron-positron scattering is performed and it is found to be possible to preserve unitarity.

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Carlos M. Reyes. 2013-07-19. Unitarity in higher-order Lorentz-invariance violating QED. https://doi.org/10.1103/physrevd.87.125028

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