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< Quantum Field Theory
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[edit] Interaction Lagrangians and coupling constans. Interaction representation for the time evolution of the state vector. S-matrix. Cross sections.
[edit] Covariant perturbation theory. T-product and N-product of the field operators. Propagators. Wick's theorem.
[edit] Interaction of fermions and bosons, Lint=-gψψ(φ+φ+). Feynman rules in coordinate and momentum space. Scattering of fermions. Non-relativistic limit. One boson exchange potential.
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