On-shell renormalization scheme: Difference between revisions

Revision as of 18:34, 16 July 2013

Revision as of 20:27, 17 July 2013

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==Vertex function==

A similar reasoning using the [[vertex function]] leads to the renormalization of the electric charge <math>e_r</math>. This renormalization, and the fixing of renormalization terms is done using what is known from classical electrodynamics at large space scales. This leads to the value of the counterterm <math>\delta_1</math>, which is, in fact, equal to <math>\delta_2</math> because of the [[Ward-Takahashi identity]]. It is this calculation that account for the [[anomalous magnetic dipole moment]] of fermentationsfermions.

==Rescaling of the QED Lagrangian==