Sumários

T25

28 maio 2020, 10:00 • João Paulo Ferreira da Silva

Renormalizable theories.
Finite contributions from the renormalization: running coupling constant; cancelling of infrared divergence in Coulomb scattering; anomalous magnetic moment of the electron.
END of Chapter 7
Summary of course.
Bibliography: pgs. 298-312

T24

26 maio 2020, 15:00 • João Paulo Ferreira da Silva

Renormalization of the vertex in QED.
Superficial degree of divergence.
Bibliography: pgs. 290-300

T23

21 maio 2020, 10:00 • João Paulo Ferreira da Silva

Self-energy of the photon (cont.).
Counterterms and renormalization.
1-loop renormalization: Self-energy of the electron.
Bibliography: pgs. 281-290

T22

19 maio 2020, 15:00 • João Paulo Ferreira da Silva

The concept of renormalization; a toy example. Multiplicative renormalization versus counterterms.
1-loop renormalization: Self-energy of the photon (vacuum polarization). Bibliography: pgs. 275-280.

T21

14 maio 2020, 10:00 • João Paulo Ferreira da Silva

Dimensional regularization. Wick rotation.
Feynman parameterization, completing the square, momentum shift. A simple application.
Bibliography: pgs. 335-340; first 15 pages of https://porthos.tecnico.ulisboa.pt/Public/textos/one-loop.pdf .