Sumários

Field Theory

30 Março 2022, 11:00 Luís Bento

Action invariance under translations and Lorentz group transformations. Energy-momentum and Lorentz group charge conservation laws. Spin densities of free spinor and vector-electromagnetic fields. Energy-momentum tensor of real scalar, spinor and electromagnetic fields. Symmetrization of the electromagnetic energy-momentum tensor including interaction with a charge current density. Electromagnetic energy and momentum balance equations.


Field Theory

25 Março 2022, 11:00 Luís Bento

Exercises about symmetries and Nöether theorem.


Field Theory

23 Março 2022, 11:00 Luís Bento

Electromagnetic field Lagrangian and equations of motion. Nöether theorem, examples of complex scalar field and of electrodynamics.


Field Theory

18 Março 2022, 11:00 Luís Bento

Action of a dynamical field, equations of motion. Examples of scalar and spinor fields.


Dirac equation

16 Março 2022, 11:00 Luís Bento

Driac equation with minimal eçectromagnetic coupling. Non-relativistic limit, intrinsic magnetic moment, g=2 gyromagnetic factor. Anomalous magnetic moments, non-minimal coupling.