de | en


SFB-Seminar Teilprojekt C5
Maxim Zabzine (Uppsala University); Gerald Dunne ( University of Connecticut)
5.5.2014, 14:00 Uhr – 16:30 Uhr

The main idea of Berline-Vergne and Atiyan-Bott localisation formulas is that the certain multidimensional
integral can be evaluated exactly by summing up a number of fixed points contributions. I will discuss how
these ideas can be generalized to infinite dimensional setup in the context of quantum field theory. As an
illustration I will discuss briefly the example of 3D Chern-Simons theory.

"Resurgent" semiclassical analysis, a systematic unification of
perturbative and non-perturbative sectors, can be applied to resolve
fundamental problems in quantum theories with degenerate minima.
Expansions about different saddle points are quantitatively related to one
another in a precise manner. Illustrations include double-well and
periodic potentials in QM, and asymptotically free QFTs such as CPN and
Yang-Mills, where this resurgent approach yields a new semiclassical
interpretation of IR renormalons.


14:00 – 15:00 Vortrag
Prof. Maxim Zabzine (Uppsala University)
Localization in quantum field theory
15:00 – 15:30 Pause
15:30 – 16:30 Vortrag
Prof. Gerald Dunne ( University of Connecticut)
Resurgence and Non-Perturbative Physics

Verknüpft mit:

Vortragsveranstaltungen 2014