TY  - CONF
AU  - Zwicky, Roman
TI  - A brief Introduction to Dispersion Relations and Analyticity
IS  - DESY-PROC-2016-04
CY  - Hamburg
PB  - Verlag Deutsches Elektronen-Synchrotron
M1  - PUBDB-2017-06825
M1  - DESY-PROC-2016-04
SN  - 978-3-945931-07-3
T2  - DESY-PROC
SP  - 93-120
PY  - 2017
AB  - In these lectures we provide a basic introduction into the topic of dispersion relation and analyticity. The properties of 2-point functions are discussed in some detail from the viewpoint of the Källén-Lehmann and general dispersion relations. The Weinberg sum rules figure as an application. The analytic structure of higher point functions in perturbation theory are analysed through the Landau equations and the Cutkosky rules.
T2  - Quantum Field Theory at the Limits
CY  - 18 Jul 2016 - 30 Jul 2016, Dubna (Russia)
Y2  - 18 Jul 2016 - 30 Jul 2016
M2  - Dubna, Russia
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
DO  - DOI:10.3204/DESY-PROC-2016-04/Zwicky
UR  - https://bib-pubdb1.desy.de/record/330326
ER  -