000330326 001__ 330326 000330326 005__ 20211110142838.0 000330326 020__ $$a978-3-945931-07-3 000330326 020__ $$a978-3-945931-07-3 000330326 0247_ $$2datacite_doi$$a10.3204/DESY-PROC-2016-04/Zwicky 000330326 0247_ $$2ISSN$$a1435-8077 000330326 037__ $$aPUBDB-2017-06825 000330326 041__ $$aEnglish 000330326 0881_ $$aDESY-PROC-2016-04 000330326 088__ $$2DESY$$aDESY-PROC-2016-04 000330326 1001_ $$0P:(DE-HGF)0$$aZwicky, Roman$$b0$$eCorresponding author 000330326 1112_ $$0C16-07-18.8$$2inspire$$aQuantum Field Theory at the Limits$$cDubna$$d2016-07-18 - 2016-07-30$$gHQ 2016$$wRussia 000330326 245__ $$aA brief Introduction to Dispersion Relations and Analyticity 000330326 260__ $$aHamburg$$bVerlag Deutsches Elektronen-Synchrotron$$c2017 000330326 29510 $$aZwicky, Roman "A brief Introduction to Dispersion Relations and Analyticity" in Proceedings of the Helmholtz International Summer School 2016 (HQ 2016) : Quantum Field Theory at the Limits : from Strong Fields to Heavy Quarks / Ali, Ahmed, Blaschke, David, Issadykov, Aidos, Ivanov, Mikhail (eds.), Verlag Deutsches Elektronen-Synchrotron : 2017 ; HQ 2016 : Helmholtz International Summer School 2016, 2016-07-18 - 2016-07-30, Dubna 000330326 300__ $$a93-120 000330326 3367_ $$2ORCID$$aCONFERENCE_PAPER 000330326 3367_ $$033$$2EndNote$$aConference Paper 000330326 3367_ $$2BibTeX$$aINPROCEEDINGS 000330326 3367_ $$2DRIVER$$aconferenceObject 000330326 3367_ $$0PUB:(DE-HGF)29$$2PUB:(DE-HGF)$$aReport$$mreport 000330326 3367_ $$2DataCite$$aOutput Types/Conference Paper 000330326 3367_ $$0PUB:(DE-HGF)8$$2PUB:(DE-HGF)$$aContribution to a conference proceedings$$bcontrib$$mcontrib$$s1499753337_2682 000330326 3367_ $$0PUB:(DE-HGF)7$$2PUB:(DE-HGF)$$aContribution to a book$$mcontb 000330326 4900_ $$0PERI:(DE-600)2450075-6$$aDESY-PROC 000330326 520__ $$aIn 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 K\"all\'en-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. 000330326 536__ $$0G:(DE-HGF)POF3-899$$a899 - ohne Topic (POF3-899)$$cPOF3-899$$fPOF III$$x0 000330326 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0 000330326 7870_ $$0PUBDB-2017-01598$$aAli, Ahmed et. al.$$dVerlag Deutsches Elektronen-Synchrotron$$iisPartOf$$rDESY-PROC-2016-04$$tProceedings of the Helmholtz International Summer School 2016 (HQ 2016) : Quantum Field Theory at the Limits : from Strong Fields to Heavy Quarks 000330326 8564_ $$uhttps://bib-pubdb1.desy.de/record/330326/files/fulltext.pdf$$yOpenAccess 000330326 909CO $$ooai:bib-pubdb1.desy.de:330326$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire 000330326 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a U. Edinburgh, Higgs Ctr. Theor. Phys.$$b0 000330326 9131_ $$0G:(DE-HGF)POF3-899$$1G:(DE-HGF)POF3-890$$2G:(DE-HGF)POF3-800$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bProgrammungebundene Forschung$$lohne Programm$$vohne Topic$$x0 000330326 9141_ $$y2017 000330326 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000330326 915__ $$0LIC:(DE-HGF)CCBY4$$2HGFVOC$$aCreative Commons Attribution CC BY 4.0 000330326 9201_ $$0I:(DE-H253)L-20120731$$kL$$lBibliothek und Dokumentation$$x0 000330326 980__ $$acontrib 000330326 980__ $$aVDB 000330326 980__ $$aUNRESTRICTED 000330326 980__ $$areport 000330326 980__ $$acontb 000330326 980__ $$aI:(DE-H253)L-20120731 000330326 9801_ $$aFullTexts