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(Zα)4 order of the polarization operator in Coulomb field at low energy

Article ID Journal Published Year Pages File Type
1841782 Nuclear Physics B 2009 16 Pages PDF
Abstract
We derive the low-energy expansion of (Zα)2 and (Zα)4 terms of the polarization operator in the Coulomb field. Physical applications such as the low-energy Delbrück scattering and “magnetic loop” contribution to the g factor of the bound electron are considered.
Keywords
Multiloop calculations12.20.Dsg factorQuantum electrodynamics
Related Topics
Physical Sciences and Engineering Mathematics Mathematical Physics
Preview
(Zα)4 order of the polarization operator in Coulomb field at low energy
Authors
G.G. Kirilin, R.N. Lee,
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Nuclear Physics B
Journal: Nuclear Physics B
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