Manifestly gauge invariant QED
Manifestly gauge invariant QED
 
  We uncover a method of calculation that proceeds at every step without fixing the gauge or specifying details of the regularisation scheme. Results are obtained by iterated use of integration by parts and gauge invariance identities. Calculations can be performed almost entirely diagrammatically. The method is formulated within the framework of an exact renormalisation group for QED. We demonstrate the technique with a calculation of the one-loop beta function, achieving a manifestly universal result, and without gauge fixing.
  
  115-[26pp]
  
    
      Arnone, Stefano
      
        d2a9a0a5-34fd-4205-b5f4-107208f44fb2
      
     
  
    
      Morris, Tim R.
      
        a9927d31-7a12-4188-bc35-1c9d3a03a6a6
      
     
  
    
      Rosten, Oliver J.
      
        26ca1633-a7c7-418f-af0d-e65b4ec487ed
      
     
  
  
   
  
  
    
      October 2005
    
    
  
  
    
      Arnone, Stefano
      
        d2a9a0a5-34fd-4205-b5f4-107208f44fb2
      
     
  
    
      Morris, Tim R.
      
        a9927d31-7a12-4188-bc35-1c9d3a03a6a6
      
     
  
    
      Rosten, Oliver J.
      
        26ca1633-a7c7-418f-af0d-e65b4ec487ed
      
     
  
       
    
 
  
    
      
  
  
  
  
  
  
    Arnone, Stefano, Morris, Tim R. and Rosten, Oliver J.
  
  
  
  
   
    (2005)
  
  
    
    Manifestly gauge invariant QED.
  
  
  
  
    Journal of High Energy Physics, 10, .
  
   (doi:10.1088/1126-6708/2005/10/115). 
  
  
   
  
  
  
  
  
   
  
    
      
        
          Abstract
          We uncover a method of calculation that proceeds at every step without fixing the gauge or specifying details of the regularisation scheme. Results are obtained by iterated use of integration by parts and gauge invariance identities. Calculations can be performed almost entirely diagrammatically. The method is formulated within the framework of an exact renormalisation group for QED. We demonstrate the technique with a calculation of the one-loop beta function, achieving a manifestly universal result, and without gauge fixing.
        
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      Published date: October 2005
 
    
  
  
    
  
    
  
    
  
    
  
    
     
    
  
    
  
    
  
    
  
  
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        Local EPrints ID: 57005
        URI: http://eprints.soton.ac.uk/id/eprint/57005
        
          
        
        
        
        
          PURE UUID: 9d9c8e91-d3b7-4e05-a2b8-15d743a2792c
        
  
    
        
          
        
    
        
          
            
              
            
          
        
    
        
          
        
    
  
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  Date deposited: 13 Aug 2008
  Last modified: 16 Mar 2024 02:36
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      Contributors
      
          
          Author:
          
            
            
              Stefano Arnone
            
          
        
      
        
      
          
          Author:
          
            
            
              Oliver J. Rosten
            
          
        
      
      
      
    
  
   
  
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