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 Renormalization of QED in ch.26 
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Joined: 21 Jul 2008, 04:37
Posts: 6
Post Renormalization of QED in ch.26
I would simply like to know the answer to the question 26.14, which is an intermediate level one. It asks why the electric field strength is reduced by the virtual partile antiparticle creation around a point charge, which forms the basis of renormalizability of Quantum electrodynamics. Thanks. There are two other questions of mine that haven't been answered.


01 Sep 2008, 01:44
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Joined: 07 Jun 2008, 08:21
Posts: 235
Post Re: Renormalization of QED in ch.26
I think that you are not getting replies because most people have not reached the point in the book that you have. You'll have to wait for people to catch up.


03 Sep 2008, 22:12

Joined: 21 Jul 2008, 04:37
Posts: 6
Post Re: Renormalization of QED in ch.26
Thanks for the attention. I have devoted a significant portion of my summer time reading those chapters. It's been a very rewarding experience. I will keep posting questions along the way (I am at page 750ish right now) and feel free to answer any of them at any convenient time.


15 Sep 2008, 20:05

Joined: 13 Mar 2008, 14:06
Posts: 42
Location: Ithaca NY
Post Re: Renormalization of QED in ch.26
Because the particle antiparticle pairs are little dipoles. The dipole moment would line up with the particle that's being masked by electrostatic attraction. Think of a sphere surrounding the particle. If the particle has negative charge, more positive charge from the dipoles will be inside that sphere, than negative charges. So the electric flux coming out of the sphere is less than it would be without the particle-antiparticle pairs.
Laura


16 Sep 2008, 23:00
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