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scilover89
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Photon doesn't interact with external force and move with light speed. But why can it act as force carrier, play a role in photoelectric etc.?
scilover89 said:Photon doesn't interact with external force
jtbell said:Photons most certainly do interact with charged particles via the electromagnetic interaction at its fundamental level.
dextercioby said:Photons interact with photons (in QED,not EW,or SM) via lepton-antilepton pairs,
dextercioby said:What...??Photons do interact,check QED again...Especially the last section from Ahizer & Berestetzkii,where the diff.cross-section for photon-photon scattering is computed...
Daniel.
dextercioby said:It's not a gauge-boson,there are 2 pairs of massive lepton-massive antilepton...Take the book,Marlon...
Take the pencil.Compute the S-Matrix for QED in the 4-th order and then the amplitude of probability of transition between the initial state with 2 photons and final state with 2 photons...That is the simplest example of photon-photon scattering...
You claim to know so much,yet u sometimes cannot prove it...
I am not wrong, my dear friend. Don't deny the abelian field theory. Photons do not Interact, PERIOD.P.S.Don't argue for the sake of arguing,especially when u're wrong...
A photon is a fundamental particle that carries electromagnetic energy and is the force carrier for the electromagnetic force. It is also the smallest unit of light and travels at the speed of light.
Unlike other particles, photons have no mass and no electric charge. They only exist as energy and do not experience time or space in the same way as other particles.
A photon has several properties, including wavelength, frequency, energy, and polarization. These properties determine its behavior and interactions with other particles.
Photons can be created through various processes, such as atomic transitions, particle interactions, and nuclear reactions. They can also be produced by natural sources, such as the sun, or artificially, through devices like lasers.
Photons play a crucial role in the universe as they are responsible for carrying electromagnetic energy, which is vital for many processes, including photosynthesis, vision, and communication technologies. They also play a role in the formation and evolution of celestial objects, such as stars and galaxies.