Sumários
Feynman diagrams
4 Junho 2025, 16:30 • Luís Bento
Application of the Feynman rules for the transition amplitudes of several processes. Derivation of the vertices rules for scalar QED, spinor anomalous magnetic moment, Z boson and gluon couplings to fermions.
Green functions
2 Junho 2025, 14:00 • Luís Bento
Calculation of real and complex scalar field Feynman propagators.
Perturbation theory and Feynman rules
28 Maio 2025, 16:30 • Luís Bento
Schrödinger, Heisenberg and Dirac representations. Time-dependent perturbation theory, interaction respresentation in field theory. Matrix S expansion.
Application to processes with Yukawa interaction: scalar boson decay, two fermion scattering. Derivation of the Feynman rules.
Series 4
26 Maio 2025, 14:00 • Luís Bento
Commutators of charge and Hamiltonean operators with spinor fields.
Electromagntic and spinor field quantization
21 Maio 2025, 16:30 • Luís Bento
Electromagnetic free radiation field, Hamiltonean and linear momentum operators. Photon creation and annihilation operators.
Dirac spinor Hamiltonean, linear momentum and charge operators, commutation relations with the
spinor field. Free spinor field, particle and anti-particle creation and annihilation operators.