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arXiv · 1212.6361

A new CPT-even and Lorentz-Violating nonminimal coupling in the Dirac equation

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

In this work, we propose a CPT-even and Lorentz-violating dimension-five nonminimal coupling between fermionic and gauge fields, involving the CTP-even and Lorentz-violating gauge tensor of the SME. This nonminimal coupling modifies the Dirac equation, whose nonrelativistic regime is governed by a Hamiltonian which induces new effects, such as an electric-Zeeman-like spectrum splitting and an anomalous-like contribution to the electron magnetic moment, between others. Some of these new effects allows 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. O. Silva, E. Passos, F. E. P. dos Santos. 2012-12-27. A new CPT-even and Lorentz-Violating nonminimal coupling in the Dirac equation. https://doi.org/10.1103/physrevd.87.047701

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