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SUMMARY:Mykola Dedushenko (SCGP)
DTSTART:20201106T184500Z
DTEND:20201106T194500Z
DTSTAMP:20260423T041507Z
UID:PUHET/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/PUHET/7/">Ya
 ngians and other algebras you can find at boundaries and interfaces</a>\nb
 y Mykola Dedushenko (SCGP) as part of Princeton HET seminar\n\n\nAbstract\
 nI will discuss protected sectors in the 4d N=4 SYM with the half-BPS boun
 dary or interface. Algebraic structures of various levels of complexity ap
 pear in this context\, such as U(g) (universal enveloping algebra)\, W(g\,
 e) (fintie W-algebra)\, their quantum Hamiltonian reductions\, and the Yan
 gian (or rather its truncation). One can use the power of algebra\, as wel
 l as integrability in the latter case\, to solve for correlation functions
 . In particular\, for an interface engineered by a pair of fivebranes\, on
 e can leverage connection to the inhomogeneous XXX spin chain to compute c
 orrelators quite explicitly.\nBased on  2009.11197  and  2009.11198.\n
LOCATION:https://researchseminars.org/talk/PUHET/7/
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