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arXiv · 1309.3928

A CPT-even Lorentz-violating nonminimal coupling between fermions and photons

R. Casana·M. M. Ferreira Jr.·E. Passos F. E. P. Dos Santos·E. O. Silva
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Abstract

We propose a CPT-even and Lorentz-violating dimension-five nonminimal coupling between fermionic and gauge fields, involving the CPT-even and Lorentz-violating gauge tensor of the Standard-Model Extension. This nonminimal coupling modifies the nonrelativistic regime of Dirac particles, inducing new effects such as an electric-Zeeman-like spectrum splitting and an anomalous-like contribution to the electron magnetic moment. These new effects allow to constrain the magnitude of this nonminimal coupling in 1 part in $10^{16}.$

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R. Casana, M. M. Ferreira Jr., E. Passos F. E. P. Dos Santos, E. O. Silva. 2013-09-16. A CPT-even Lorentz-violating nonminimal coupling between fermions and photons. https://doi.org/10.1142/9789814566438_0035

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