4020110081 On-Shell methods in gauge theory scattering amplitudes
Digital- & Präsenz-basierter Kurs
- classroom language
- DE
- requirements
- Quantum Field Theory I
- structure / topics / contents
- These lectures introduce into modern efficient techniques
for the computation of scattering amplitudes in gauge theories
using generalized unitarity methods. The traditional method using
Feyman diagrams employs off-shell and gauge variant expressions
at intermediate stages of the computation leading to an immense
increase in complexity, whereas the final results are often rather
compact. In these lectures a certain emphasis will be put on the
case of maximally supersymmetric (N=4) gauge theory, but applications
to QCD will also be discussed.
Incomplete list of topics: Spinor helicity formalism, planar limit, symmetries of
tree-level amplitudes, BCFW recursion, super-amplitudes, all tree-level amplitudes in massless
QCD, dual conformal and Yangian symmetry, one-loop basis, IR divergencies,
scattering amplitudes and light-like WIlson loops, recent developments.
- assigned modules
-
P23.1.2a
P23.1
GK1504 1
- amount, credit points; Exam / major course assessment
- 5 SWS, 5 SP/ECTS (Arbeitsanteil im Modul für diese Lehrveranstaltung, nicht verbindlich)
Oral exam for the completion of module P23.1.2a possible.
- contact
- Prof. Dr. Jan Plefka
- literature
-
L. J. Dixon. Calculating scattering amplitudes efficiently. TASI lectures, hep-ph/9601359
L. F. Alday, R. Roiban. cattering Amplitudes, Wilson Loops and the String/Gauge Theory Correspondence. hys. Rept. 468, 153-211 (2008). [arXiv:0807.1889 [hep-th]]
J.M. Henn. Duality between Wilson loops and gluon amplitudes. Fortsch. Phys. 57, 729-822 (2009). [arXiv:0903.0522 [hep-th]]
J. Drummond. Hidden Simpicity of Gauge Theory Amplitudes. arxiv: 1010.2418