24–27 Sept 2013
DESY Hamburg
Europe/Berlin timezone

Resurgence and quantum field theory

24 Sept 2013, 14:50
40m
Main Auditorium (DESY Hamburg)

Main Auditorium

DESY Hamburg

Notkestrasse 85 22607 Hamburg

Speaker

Gerald Dunne (Connecticut)

Description

"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.

Presentation materials