- #1
Omega0
- 205
- 51
Hi,
What is the basic idea about particle interaction in QM?
Say you have first one single charged particle in an "empty universe". Here I think the first issue is given: That's impossible, you'll need masses (or better: energy) from a GRT view. Okay, say we watch this single charged particle - but we don't know that it is charged.
In the classical picture I have a field, something strange, you can draw radiating lines or whatever. Unfortunetely this makes no sense for a single particle because we need a measurement. Now let us stll be the "god observer" without interaction to the scene. I place now a particle of the oppenent charge in my universe. I have now attraction between both particles (retarded, for sure). Now it makes more sense to think in "field lines" between both particle but nevertheless: This world outside is hidden until I measure the change, so I wiould measure the acceleration of the particles.
I would need to disturb the process via measurement.
Between both particles exists something called "electromagnetic attracion". There is potential energy between both. They will accelerate. They will "radiate". It is impossible to find a reference frame where they don't.
So let's get to quantum picture of the scene. Both particles are accelerating, so I expect them to emit particles. They emit them in opposite directions to accelerate. Are those photons? What is about the "field" around those charged particles - do you think it exists because we have two particles or do we only measure it as a "third particle"? How would you describe this picture?
Thanks,
Jens
What is the basic idea about particle interaction in QM?
Say you have first one single charged particle in an "empty universe". Here I think the first issue is given: That's impossible, you'll need masses (or better: energy) from a GRT view. Okay, say we watch this single charged particle - but we don't know that it is charged.
In the classical picture I have a field, something strange, you can draw radiating lines or whatever. Unfortunetely this makes no sense for a single particle because we need a measurement. Now let us stll be the "god observer" without interaction to the scene. I place now a particle of the oppenent charge in my universe. I have now attraction between both particles (retarded, for sure). Now it makes more sense to think in "field lines" between both particle but nevertheless: This world outside is hidden until I measure the change, so I wiould measure the acceleration of the particles.
I would need to disturb the process via measurement.
Between both particles exists something called "electromagnetic attracion". There is potential energy between both. They will accelerate. They will "radiate". It is impossible to find a reference frame where they don't.
So let's get to quantum picture of the scene. Both particles are accelerating, so I expect them to emit particles. They emit them in opposite directions to accelerate. Are those photons? What is about the "field" around those charged particles - do you think it exists because we have two particles or do we only measure it as a "third particle"? How would you describe this picture?
Thanks,
Jens