QED gangster consultation

Consultation takes place online at Google classroom .
Meeting Nickname: epcdxgot4b . Class code: 4itk46w .

NB: At your IS External Services G Suite should be enabled. Especially you need IS to generate a Google Mail account via your UCO number.

TheorTea seminar take place online via Zoom .
Meeting ID: 987 0002 6434 . Passcode: 263322 .

UTFA Friday seminar take place online via Zoom .
Meeting ID: 980 2209 7229 . Passcode: 093475 .

FA566 String Theory take place online via Zoom .

FA566 String Theory google drive folder .

CEICO seminar take place online via Zoom .

Spring 2020:

Friday 20.03.20:
Loop integrals; Master formula; Feynman trick; (video)

Tuesday 24.03.20:
Full & Free path ingral/partition function; Full & Free propagator and Self-energy; phi-cubed theory; Renormalization; Counterterms; J-picture; Amputated picture; Symmetry factors; Combinatorics; (video)

Friday 27.03.20:
hbar/loop-expansion; Superficial degree of divergence; Renormalizability; Dimensional analysis; phi-cubed self-energy; (video)

Tuesday 31.03.20:
On-shell (OS) and MS-bar renormalization schemes; RG-flow; Beta function; (video) (Correction: At 1:24:21 "power series" should be "polynomial".)

Friday 03.04.20:
Stueckelberg pure QED; Lagrangian; 't Hooft-Veltman gauge; Faddeev-Popov term; Propagators; Feynman rules; Photon propagator: Self-loop diagram; (video)

Tuesday 07.04.20:
Photon propagator: Ghost-loop diagram + scalar loop diagram; Feynman trick; (video)

Tuesday 14.04.20:
Other propagator; Photon propagator: photon-loop; Conventions for derivative couplings; (video)

Friday 17.04.20:
Photon propagator: photon-loop; Ward identities; Ghost propagator; (video)

Tuesday 21.04.20:
Result for photon propagator in Feynman xi=1 gauge; Ghost propagator; Scalar propagator; Kaluza-Klein notation; (video)

Friday 24.04.20:
Scalar propagator; Mixed propagator; Conventions for Fourier transform; Conventions for derivative couplings; (video)

Tuesday 28.04.20:
BRST formulation; Ward identity; (video)

Tuesday 05.05.20:
Ward identity; Fourier transformation; Check and predictions for photon propagator; (video)

Tuesday 19.05.20:
Fermionic matter; Ward identity; Fourier transformation; (video)

Fall 2020:

Thursday 08.10.20:
Greens functions, Propagators & 2-pt functions; (video)

Thursday 15.10.20:
Greens functions, Propagators & 2-pt functions. Operator ordering prescriptions; (video)

Thursday 22.10.20:
Greens functions; Feynman rules; (video)

Thursday 29.10.20:
BRST symmetry vs. Gauge symmetry; Dirac-Bergmann analysis/singular Legendre transformation; (video)

Thursday 12.11.20:
Faddeev-Popov deteminant and gauge-fixing; BRST symmetry; Higgs mechanism; (video)

Thursday 19.11.20:
Renormalization; (video)

Thursday 26.11.20:
Renormalization; Linked cluster theorem and connected Feynman diagrams; (video)

Thursday 03.12.20:
hbar/loop-expansion; Legendre transformation; 1PI Feynman diagrams; (video)

Thursday 10.12.20:
Asymptotics series; (video)

Thursday 17.12.20:
Group & representation theory; GUT SU(5) -> SU(3) x SU(2) x U(1) branching rules; (video) (NB: 47:30-48:45 is wrong.)

Thursday 07.01.21:
Young tableaux; Hodge duality; Wigner-Eckart theorem; (video)

Thursday 14.01.21:
Solitons [Sred] 92; Derrick's theorem; (video)