Talk:Self-energy
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Yes, merge this with renormalization since the self-energy terms in a Feynman diagram sequence causes the field to explode thus requiring renormalization. The two are closely linked.
- I'm not sure that this is a good idea. By the same token, one could argue that coupling constant ought to be merged with renormalization, since coupling constants invariably need renormalization in local field theories in continuous space-time. Stevvers 03:21, 17 November 2006 (UTC)
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- Self energy need not be introduced in terms of Quantum Field Theory directly. The problem arises in classical context as well. A charged particle (say an electron) produces an electric field. One can ask what the effect of this field on the electron is? The answer to this in classical theory is "infinite."
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- The question is resolved using quantum field theory by 'summing' all the contributions due to this self-interaction and absorbing the infinite part into a redefinition of the electron wave-function and mass. This redefinition is called Renormalization. It need not be merged with renormalization if it is linked in this way. Nishitad (talk) 14:16, 5 February 2008 (UTC)
Need to define the pole mass
- We should define the pole mass of a particle here. It should be easy.... HEL 01:55, 8 December 2006 (UTC)
