Recent content by pudilz

The Pauli Exclusion Principle states that no two fermions can have the same quantum state. Quantum state meaning the assortment of quantum numbers that the wave function has in order to describe the system. Sure two protons can have the same total spin, but other things like their spin...

Is this right? To calculate a scattering amplitude for a certain scattering event, you take the term in the wick's expansion of the S-Matrix that suits your situation best. Then you draw a Feynman Diagram that corresponds to the term in the wick's expansion, then just use the Feynman Rules to...