- #1
per.sundqvist
- 111
- 0
We know that we can create an electron-positron pair out of a gamma-ray, if it has an energy of [tex]E=h\nu>2m_ec^2[/tex].
However a photon is described as an EM-wave that obeys the divergence criteria
[tex]\nabla\cdot\vec{E}=0[/tex]
My question is simply if there is a "simple" explanation out there (QFT?) which describes microscopically what happens when the photon breaks up and 2 charged packages are created? I also wonder what the distance between the particles is in the creation moment.
My guess is that the EM-wave/photon must be disturbed in some way (by gravity?) such that it bends in some way, and that it is this bending which gives rise to the charge creation: [tex]\nabla\cdot\vec{E}=\rho/\epsilon[/tex], but where the total charge is neutral, like in the point-particle classical situation:
[tex]\rho=e(\delta(r-a)-\delta(r+a))[/tex] (some kind of dipole, but perhaps rater described with waves)
Any idea?
However a photon is described as an EM-wave that obeys the divergence criteria
[tex]\nabla\cdot\vec{E}=0[/tex]
My question is simply if there is a "simple" explanation out there (QFT?) which describes microscopically what happens when the photon breaks up and 2 charged packages are created? I also wonder what the distance between the particles is in the creation moment.
My guess is that the EM-wave/photon must be disturbed in some way (by gravity?) such that it bends in some way, and that it is this bending which gives rise to the charge creation: [tex]\nabla\cdot\vec{E}=\rho/\epsilon[/tex], but where the total charge is neutral, like in the point-particle classical situation:
[tex]\rho=e(\delta(r-a)-\delta(r+a))[/tex] (some kind of dipole, but perhaps rater described with waves)
Any idea?