Introduction.- The Euler-Lagrange equations and Noether's theorem.- Scalar fields.- Vector fields.- Relativistic spinor fields.- The quantum theory of free fields.- Perturbative expansion in the phi44 model.- Renormalization.- Renormalization group.- Relativistic invariance and the spectral decomposition of G(2).- Paths integrals in QFT.- The perturbative expansion for non-Abelian gauge fields.- The simplest supersymmetric models.- Anomalies.- Appendix: Some facts about generalized functions.
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