Mykola Dedushenko 博士学术报告
Title: Boundary and interface correlators, algebras, and spin chains in 4d N=4
Speaker: Dr. Mykola Dedushenko
Affiliation: Stony Brook University, USA
Time:10:30-11:30, Tuesday, 13th December, 2022 (UTC+8, Beijing Time)
Inviter: Ryo Suzuki
Venue: Zoom Meeting (ID: 385 442 0225; Passcode: yauc)
Abstract
One-dimensional protected sectors in the 4d N=4 SYM with a half-BPS boundary or interface are controlled by associative algebras that include U(g) (universal enveloping algebra), W(g,e) (fintie W-algebra), their quantum Hamiltonian reductions, and the Yangian. One can use algebraic techniques and integrability (in the Yangian case) to solve for the correlation functions. The Yangian is found on the interface engineered by a stack of n fivebranes (D5 or NS5), which is related to the inhomogeneous sl_n spin chain. In particular, when n=2, we leverage connection to the inhomogeneous XXX spin chain to compute correlators quite explicitly.
Based on 2009.11197 and 2009.11198.
Speaker
Mykola Dedushenko obtained PhD in Princeton in 2016, and is currently working at SCGP in Stony Brook. He is an expert in the integrable systems and supersymmetric gauge theories.
The seminar will be broadcasted online by Zoom.
Interested people are free to join, without registration in advance.
The Zoom info is
URL：https://us02web.zoom.us/j/3854420225?pwd=SXY4eWJKOTBFZWJDaE16aXpTamY1QT09
Meeting ID: 385 442 0225
Passcode: yauc