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Detailed Programme of the Week 11/2/2020 -- 11/6/2020:
-- Interactions
LECT 26 -- Monday
10/26/2020 - 2h Bonciani 12:00-14:00
(Majorana) meet.google.com/rkn-mafj-mra
Classical interaction of a point-like particle with the
electromagnetic field. Minimal substitution. Electromagnetic
interaction of fields and lagrangian density. Gauge
transformation and Gauge Principle. Quantization of the
interaction lagrangian. Non derivative interactions.
Scattering matrix.
LECT 27 -- Tuesday 10/27/2020 - 2h
Bonciani 8:00-10:00 (Conversi)
meet.google.com/szf-gndu-pwc
Interaction representation. Time-dependent
perturbation theory and Dyson's formula. Unitarity and Lorents
invariance of the scattering matrix. Properties of the
time-ordered exponential. Wick's theorem. Time
ordered product of 2, 3, 4 fields. Bosonic and fermionic fields.
LECT 28 -- Wednesday 10/28/2020 - 2h
Bonciani 9:00-11:00 (Conversi)
meet.google.com/szf-gndu-pwc
Time-ordered product of normal ordered fields.
Evaluation of the scattering matrix at the first order in QED.
Building blocks, vertex interactions. Evaluation
of the scattering matrix at the second order in QED.
One-contraction contributions: electron Compton scattering,
positron Compton scattering, pair creation and pair
annihilation, Moller scatterin.
LECT 29 -- Thursday 10/29/2020 - 2h Bonciani
8:00-10:00 (Majorana) meet.google.com/rkn-mafj-mra
Bhabha scattering. Two-contractions contributions: electron and
positron self energy, vacuum polarization of the photon. S matrix
in momentum space. Propagators, spinors, Feynman's rules.
LECT 30 -- Friday 10/30/2020 - 2h
Bonciani 8:00-10:00 (Conversi)
meet.google.com/szf-gndu-pwc
The production Cross Section. Calculation of the cross section
for the scattering process