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SUMMARY:Saebyeok Jeong (Rutgers U)
DTSTART:20210608T070000Z
DTEND:20210608T083000Z
DTSTAMP:20260423T022833Z
UID:SNUSTRING/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/SNUSTRING/1/
 ">Boundaries\, defects\, and quantization</a>\nby Saebyeok Jeong (Rutgers 
 U) as part of SNU String Seminar\n\n\nAbstract\nAn interesting aspect of f
 our-dimensional N=2 supersymmetric field theories is their correspondence 
 with integrable systems. At the example of class S theories and Hitchin in
 tegrable systems\, I will explain how half-BPS defects in gauge theory can
  be utilized in the quantization problem. More specifically\, the vacuum e
 xpectation values and correlation functions of these defects are exactly c
 omputed by localization\, and analytic constraints make them obey certain 
 differential equations in coupling parameters. These equations and solutio
 ns are interpreted geometrically in the Hitchin moduli space side\, yieldi
 ng various implications on the quantization problem. I will also discuss h
 ow these results can be reformulated in the point of view of the two-dimen
 sional sigma model with the Hitchin target space\, connecting the story to
  that of the N=4 theory of Kapustin-Witten.\n
LOCATION:https://researchseminars.org/talk/SNUSTRING/1/
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