back to Home


Detailed Programme of the Week 12/13/2021 -- 12/17/2021:

-- Interactions


LECT 55-56 -- Tuesday 12/14/2021 -
2h Bonciani    14:00-16:00  (Conversi)  meet.google.com/szf-gndu-pwc

Scattering matrix. Interaction representation. Time-dependent perturbation theory and Dyson's formula. Unitarity and Lorentz 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 57-58 -- Thursday 12/16/2021 - 2h Bonciani    14:00-16:00  (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 scattering.


LECT 59 -- Friday 12/17/2021 - 1h Bonciani    8:00-9:00  (Majorana) meet.google.com/rkn-mafj-mra

Bhabha scattering. Two-contraction contributions: electron and positron self-energy, vacuum polarization of the photon.