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arXiv · 1211.3018

Higher order corrections to the hydrogen spectrum from the Standard-Model Extension

Theodore J. Yoder·Gregory S. Adkins
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Abstract

We have studied the effects of the Standard-Model Extension (SME) on hydrogen as a realization of new physics effects that incorporate Lorentz and CPT violation. Specifically, we calculated the SME-induced energy level shifts at order $α^2$ times the SME parameters. We obtained contributions at this order both from the non-relativistic effective Hamiltonian for motion of a spin-1/2 particle in the presence of SME interactions and also from SME corrections to the propagator for exchange photons. We applied our result to the $2S-1S$ transition in hydrogen, which has been measured with extremely high precision. The results obtained in this work give the leading SME corrections for this transition.

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Theodore J. Yoder, Gregory S. Adkins. 2012-11-13. Higher order corrections to the hydrogen spectrum from the Standard-Model Extension. https://doi.org/10.1103/physrevd.86.116005

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