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Detailed Programme of the Week 11/29/2021 -- 12/3/2021:

-- Canonical Quantization

LECT 48-49 -- Tuesday 11/30/2021 - 2h Bonciani 14:00-16:00 (Conversi) meet.google.com/szf-gndu-pwc

Canonical Quantization of the field A^mu. Problems arising from the vanishing of the momentum conjugated to A^0. Gauge fixing. Gupta-Bleuler quantization. Plane wave solutions. Physical states. Temporal, longitudinal and transverse modes. Conditions fulfilled by the physical states. Energy and momentum densities and contribution of the physical states. The Photon.

LECT 50 -- Friday 12/03/2021 - 1h Bonciani 8:00-9:00 (Majorana) meet.google.com/rkn-mafj-mra

Non-homogeneous differential equations and Green's function. The case of the scalar field. Fourier transform and integration in C. Closed paths. Open paths. Retarded and Advanced Green's functions.