Recent content by kexue

Rogerl, this is the exactly the same question I asked three months ago in another thread. What does QFT say about the transmission of forces? I read here in a http://arxiv.org/PS_cache/hep-th/pdf/9803/9803075v2.pdf" on page 3 the following. The second [general feature] is the association of...

What makes you think that the question was answered to everyone but kexue's satisfaction? The OP droped out long ago. I pointed out to the OP and everybody else in this thread that in the best-selling graduate-level QFT book of Tony Zee the answer to OPs question can be found. - Why are the...

Well, why the bare charges equal exactly, Zee says in grand unified theories it can be shown that this follows from group theory. But I was referring to that given the bare charges are completetly equal, and given that a proton is a composite of quarks and participates in strong interaction...

The question of the OP was I gave him the answer and the reference where he can check it. Still in post 56 the OP (mathman by the way) asked So he was still in the dark after 55 posts why protons and electrons have equal charges. Again, if someone polluted this thread with disgressions...

To the OP, the answer to your question can be found in "QFT in a nutshell" of Anthony Zee, chapter III.7. or in John Preskill QFT lecture notes, second part of chapter five. (And could someone, maybe a mentor explain to me if it is ok on PF to be accused of polluting the discussion when...

This thread is almost comical! The OP asked a very interesting and obvious question that QFT definitely should be able to answer. And of course it does. But the same people that yelled at me in some other thread that 'virtual' particles explain nothing, can not answered it, but digress in...

It is because the charge renormalization of the proton and electron is completely determined by the photon field renormlization. Look for example Preskill QFT notes, chapter 5, pages 52-121 starting at page 12 especially. But beware, he says that the charge renormalization is completely...

Why is it a joke? I wrote about 30 leading scientists this question, six Nobel prize winner among them. Most liked the question, some felt that this question is touching the depths of the very concept of quantum field theories. David Politzer, for example, told me, quote: This is precisely...

You are free to email Wilzcek, t'Hooft, Glashow, Anderson, Polchinsky or who else and see what they say to 'virtual' particles are only mathematical artefacts and not part of physical reality. I just copied and pasted from the email that Wilczek sent me, the others you saw in an earlier thread...

I posted many of them in an earlier thread. I was so excited that they answered and gave it not much thought to post private emails on a public forum. Please look there if you are interested. I asked many more, but stopped posting them. As I said the answers varied between the three views, but...

A.Neumaier, yes 'virtual' particles are no 'real' particles, we all knew that 300 posts before. My last words are again the words of Frank Wilczek. (Why not put these up in the PF FAQ?) [SIZE="2"]It comes down to what you mean by "really there". When we use a concept with great success and...

Ok, because some higher force of this forum has sent this thread without any explanation to the public discussion thread, let me summarize what it's all about. In quantum physics there is this funny business about measurement, as some of you might have heard of. Especially, what happens...

Well, I believe , but I'm not sure, that it is a rather a philosophical question than a physical question. More a matter of taste than a physical question. But of course, you can take this "very little of boldness", as Wilczek puts it, and say they are part of physical reality or you can...

Come on! 87 views and only 4 people voted? It is anonymous, in case someone worries. So do you have an opinion? A - concept of "virtual particle" is used in physics to organize and visualize perturbative solutions of quantum field theory, they are not "really out there" B - they are "really...

What do you think? I thought a poll, just for the fun of it!