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ILoveParticlePhysics
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- What is the formula for calculating the repulsion/attraction of charged particles in quantum electrodynamics?
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So, I calculate and draw the Feynman diagram, from which I get the S matrix elements from which I get the cross section of scattering processes which tells me how everything is going to repel/attract, right?vanhees71 said:You just draw the Feynman diagram and calculute it according to the rules derived from the formalism. Feynman diagrams are just an ingenious shortcut to do these perturbative calculations. What you get are transition-matrix elements (S-matrix elements) from which you can calculate cross sections of scattering processes.
This might sound dumb, but what exactly is 2nd order.Vanadium 50 said:Note that you will need to calculate this to at least second order, because at leading order the scattering is the same either way.
ILoveParticlePhysics said:This might sound dumb, but what exactly is 2nd order.
In quantum electrodynamics (QED), charge particle repulsion/attraction refers to the phenomenon where particles with like charges (repulsion) or opposite charges (attraction) interact with each other through the exchange of virtual photons.
The repulsion/attraction between charged particles plays a crucial role in determining the stability and structure of atoms and molecules. It also governs the interactions between particles in the nucleus, such as protons and neutrons.
The mathematical equation for calculating charge particle repulsion/attraction is known as Coulomb's law, which states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Yes, charge particle repulsion/attraction can be observed in everyday life. For example, when you rub a balloon against your hair, the balloon becomes charged and can stick to walls or your hair due to the attraction between opposite charges. Lightning is also a result of charge particle repulsion/attraction between clouds and the ground.
Charge particle repulsion/attraction is one of the four fundamental forces in nature, along with gravity, strong nuclear force, and weak nuclear force. It is responsible for most of the macroscopic interactions we observe in everyday life and is crucial for understanding the behavior of matter at a microscopic level.