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           | Description | 
           
             English: One-loop vacuum polarization diagram. This is the one loop contribution to the photon propagator Π due to vacuum polarization in  quantum electrodynamics. It contributes to a wave function renormalization for the photon, leading to a  charge screening. It has a logarithmic divergence. Similar one-loop diagrams can be considered for other  gauge bosons, such as W, Z and the  gluons. 
            Français : Diagramme à une boucle de polarisation du vide, ou d'écrantage des charges en QED. Il contribue à la renormalisation de la fonction d'onde du photon. Il possède une divergence ultraviolette logarithmique. 
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           | Date | 
           7 March 2007 | 
          
          
           | Source | 
            en:Image:Vacuum polarization.png | 
          
          
           | Author | 
            User:Stannered | 
          
          
           Permission ( Reusing this file) | 
           
             PD 
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          | Public domainPublic domainfalsefalse | 
         
        
        
         
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          This file is ineligible for  copyright and therefore in the  public domain, because it consists entirely of information that is common property and contains no original authorship. | 
         
        
        
        
        
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