Institut de Physique Théorique
Direction de la Recherche Fondamentale  -  Saclay
UMR 3681 - INP
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Friday, September 22, 2017


Séminaire de physique des particules et de cosmologie
Fri, Apr. 28th 2017, 14:00-15:00
Salle Claude Itzykson, Bât. 774, Orme des Merisiers
Properties of bound electrons and muons
Andrzej Czarnecki
University of Alberta

Binding of particles in atoms changes their properties such as the magnetic moment. In case of unstable particles like the muon, the decay spectrum is modified. In light atoms these changes should be calculable within quantum electrodynamics with high precision. Such theoretical predictions are needed for the determination of the electron mass and of the fine structure constant, and for searches of lepton-flavor violation. I will review the recent progress and remaining challenges. I will point out some qualitative changes caused even by very weak binding, showing that the binding is a singular perturbation.

993364.pdf (15 Ko)

Contact : Gregory SOYEZ

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