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SUMMARY:Nikita Nekrasov (Stony Brook University)
DTSTART:20220929T180000Z
DTEND:20220929T190000Z
DTSTAMP:20260423T005731Z
UID:nhetc/56
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/nhetc/56/">O
 ne flew over the QQ-nest</a>\nby Nikita Nekrasov (Stony Brook University) 
 as part of NHETC Seminar\n\n\nAbstract\nI will discuss the recent progress
  in Omega-deformed N=2 d=4 supersymmetric quiver theories of A-type with A
 -type gauge group\, in the presence of various arrangements of surface def
 ects. According to the BPS/CFT dictionary their expectation values are giv
 en by the conformal blocks of some (analytically continued) CFT\, and\, at
  the same time\, by the matrix elements of quantum XXX spin chains. Using 
 the qq-characters I derive (as opposed to postulate) the Q{\\tilde Q}-syst
 em and the Lax operators\, filling some gaps in the 30 year cycle of ideas
  connecting supersymmetry and integrability.\n
LOCATION:https://researchseminars.org/talk/nhetc/56/
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