Self Interaction: What, When, & How to Calculate

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Self interaction refers to the effect of a charge's field on itself, relevant in quantum electrodynamics (QED) and Feynman sums. It can occur with a single electric charge, and understanding it involves concepts like renormalization. The discussion highlights the distinction between mutual inductance and self inductance, clarifying that the focus is not on inductance but rather on self interaction. Participants suggest looking into specific resources, including a Nobel lecture, for deeper insights. Overall, self interaction is a complex topic that requires careful consideration in certain contexts.
ShayanJ
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I can't find sth about self interaction which tells for sure in what situations we should consider it and how to manipulate it!
Can we talk about self interaction for e.g. a single electric charge?Or it appears only in certain cases?How should we calculate it?

Thanks
 
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Well there is a distinction between mutual inductance and self inductance.
Is this the sort of idea you mean?
What is 'sth' by the way?
 
self interaction as in QED and Feynman sums?
Look up "renormalization".

A single electron can have a self interaction, yes.
 
Studiot said:
Well there is a distinction between mutual inductance and self inductance.
Is this the sort of idea you mean?
What is 'sth' by the way?

No,I didn't mean inductance!
I mean the effect of a charge's field on the charge itself.
And of course «something» means a webpage,paper,etc which talks about self interaction!
Thanks for caring anyway
 
Last edited:
Hey,That nobel lecture in the link above is really interesting,I strongly suggest reading it!
 

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