I'm trying to understand Feynmann diagrams interpretation in terms of virtual particles. What I still can't understand is how this interpretation is compatible with the fact that one should divide each diagram by its symmetry order.(adsbygoogle = window.adsbygoogle || []).push({});

As far as I understand, diagram symmetry order means how many different physical processes are represented by this diagram. But than one should multiply the probability by this number, not divide !

Probably someone can clarify this a bit...

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# Feynmann diagrams interpretation and diagramm symmetry order

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