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Logarithmically enhanced Euler-Heisenberg Lagrangian contribution to the electron gyromagnetic factor
Contrary to what was previously believed, two-loop radiative corrections to the g factor of an electron bound in a hydrogenlike ion at O(α2(Zα)5) exhibit logarithmic enhancement. This previously unknown contribution is due to a long-distance light-by-light scattering amplitude. Taking an effective f...
| Autores principales: | , , |
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| Lenguaje: | eng |
| Publicado: |
2020
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevA.102.050801 http://cds.cern.ch/record/2728391 |