Posted: Oct 04, 2011 7:06 am
by twistor59
zaybu wrote:So do we agree now that at higher energies (smaller scale), we have particles and nothing but particles?

:lol: I'm not totally sure exactly what that statement means, but did I write something that makes you think I changed my mind ?

The question we were discussing is whether the "particle exchange" represented by the internal lines of Feynman diagrams actually occurs or not. I claim that there is no evidence that it does occur - the "particle exchange" is merely an element of an approximation scheme - the perturbation series. It has no more "reality" than an image charge in electrostatics or a Faraday force line.

How would you define "particle" ?