Two similar charges repulse one another. if the charges are separated by 'sheet' of parallel moving photons, (the velocity of photon is normal to straight line connecting two charges, and polarization of electric field is normal to both photon motion and similar-change joining straingth line. Thus, the moving away or coming together of those similar charges are not at all effected by photons, if only velocity component of the charges facing one another is concerned. Clearly, magnetic field of photons would be parallel to straight line joining these two charges, but this would not also affect aforementioned velocity components of the charge). So, semi-classically, the moving away of the charged particles, that is their repulsion, would not be affected. also assume the media is vacuum, so no polarization of material media is occuring. Of course, all the photons are required to be palne-polarized and collimeted.
However, accroding to QFT, charged particles exchange photon (virtual?) that is manifested as attraction-repulsion between them. These exchaning photons are surely to collide with real photon stream, get deflected, and hence would no longer be captured by other charged particle. Thus the net force between the two charged particles would no longer be same.
Now my question is, is there any experiment to verify this claim of QED? Or real and virtual particles of same kind would not interact at all? Or the same charge is effective force is also explainable from lorentz force as the charged particles oscillate noremal to their connecting straight line due to electric field, and then magnetic field acts to retard?
(THIS IS A THOUGHT EXPERIMENT, so whether this situation is generatable by present technological means is immaterial. What matters is whether the setup is allowed by laws of Physics on Not. Parallel photon shower can be generated by allowing collimited photons (e.g. by Lens and Laser) to have a light-spot cross-section of a very narrow rectangle or very long slit )
Sumit Bhowmick You make a very good point and it just goes to show that the delivery of a force by the exchange of particles makes no rational sense at all.
One might understand how a single particle collision might generate a repulsive force but a force of attraction is more difficult.
Also a force is clearly a continuous effect whereas an exchange of particles would be discrete.
Furthermore the situation gets impossibly complicated when you consider the interactions between just ten individual electrons each having to exchange photons with the other electrons.
I am much more comfortable with the idea put forward by James Clerk Maxwell that the forces are delivered by the medium.
Richard
Dear Sumit Bhowmick ,
It was already shown in LEP that virtual particles don't exist!
JES
Confusion and ignorance seldom lead anywhere. There’s no such thing as a ``parallel photon shower".
It’s a standard exercise to study the motion of two electric charges in an electromagnetic wave and it’s another standard exercise to calculate the effect of quantum fluctuations of the electromagnetic field on this motion.
The first is an exercise in any course on classical electrodynamics and the second is an e exercise in quantum electrodynamics. Neither are research problems anymore.
It would be a good idea to study (classical and quantum) physics-which would lead to avoiding posing such questions in the first place. Technical subjects can't be learned from popular books and articles, but from textbooks-nowadays there are online courses on these subjects, so there's no excuse not learning them, if one's interested and no point in discussing them if one isn't interested in learning in them in depth.
Dear Stam Nicolis ,
Mainstream physics theories are all wrong or not understood, so reading textbooks is not the way to understand physics. The right way is to think, using logic and try to avoid received ideas, of which your textbooks are filled.
Asking questions is the right way to advance, together with logical conclusions.
JES
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