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Detailed Programme of the Week 10/03/2022 -- 10/07/2022:

-- Quantization of the String and recap Special Relativity


LECT 7-8 -- Tuesday 10/04/2022 -
2h Bonciani    14:00-16:00  (Conversi) 

Creation-annihilation operators. Their dependence on time. Expression of the field in terms of creation-annihilation operators. The Fock space. Commutation relations in the continuum (among fields). Bosonic character of the quanta of the string. Infinite vacuum energy and normal ordering.  [Henley-Thirring]
Principles of Relativity. Events. Time-, space- and light-like intervals. Causal structure of the space-time. Lorentz transformations (boosts and rotations).
Limit of small velocity and the recovery of Galilean transformations. [Barone, "Relativita'"; Weinberg, "Gravitation and Cosmology"]


LECT 9-10 -- Thursday 10/06/2022 - 2h Bonciani    14:00-16:00  (Conversi) 

Minkowski space.Contravariant and covariant four-vectors. Lorentz transformations form a Group. Structure of the group. Poincare' group. Infinitesimal transformations.
[Barone, "Relativita'"; Weinberg, "Gravitation and Cosmology"]
  


LECT 11 -- Friday 10/08/2021 - 2h Bonciani   8:00-9:00  (Conversi) 

Lagrangian mechanics. Lagrangian and hamiltonian densities. Least action principle and the vibrating string. Relativistic fields. Invariance of the action under Poincare' transformations. Other requirements on the lagrangian.