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
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.