Self-energy of an electron bound in a Coulomb field

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173467" target="_blank" >RIV/00216208:11320/13:10173467 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevA.88.032501" target="_blank" >http://dx.doi.org/10.1103/PhysRevA.88.032501</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.88.032501" target="_blank" >10.1103/PhysRevA.88.032501</a>

Result language
angličtina
Original language name
Self-energy of an electron bound in a Coulomb field
Original language description
The evaluation method of the one-loop self-energy of the electron bound in a Coulomb field is described. The method combines the relativistic multipole expansion with the free-particle approximation in the virtual states without breaking any integrationsof pieces. The relativistic multipole expansion is based on a single assumption: except for the part of the time component of the electron four-momentum corresponding to the electron rest mass, the exchange of four-momentum between the virtual electronand photon can be treated perturbatively. This assumption holds very well, except for the electron virtual states with very high three-momentum. It is shown that for such virtual states one can always rearrange the pertinent expression in a way that allows the electron to be treated as free. The fraction of the free-particle approximation contained in the relativistic multipole expansion carried out to a given order is precisely determined. Furthermore, it is pointed out that in the virt
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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