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SUMMARY:Niklas Beisert (ETH Zurich)
DTSTART;VALUE=DATE-TIME:20211130T140000Z
DTEND;VALUE=DATE-TIME:20211130T150000Z
DTSTAMP;VALUE=DATE-TIME:20211209T082412Z
UID:IAMP_seminars/75
DESCRIPTION:Title: Planar Integrability and Yangian Symmetry in N=4 Supersymmetric Yan
g–Mills\nby Niklas Beisert (ETH Zurich) as part of One world IAMP ma
thematical physics seminar\n\n\nAbstract\nThe discovery and utilisation of
integrability in the planar limit of certain gauge and string theory mode
ls has made available many exciting non-perturbative results and insights
for the AdS/CFT correspondence. In this talk I will introduce the prototyp
ical AdS/CFT duality between string theory on AdS₅×S⁵ and N=4 supersy
mmetric Yang–Mills theory\, and highlight the usefulness of planar integ
rability through some achievements. I will then present a formal notion of
integrability as a hidden Yangian symmetry of the action. Importantly\, t
his symmetry is realised on field theory objects in a non-standard fashion
for which a rigorous framework to deal with its implications is lacking.
I will demonstrate that this symmetry indeed leads to non-trivial relation
s for quantum correlations functions of this model. In order to make them
work out\, I also show in what sense the symmetry is compatible with BRST
gauge fixing.\n
LOCATION:https://researchseminars.org/talk/IAMP_seminars/75/
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