4 papers
Riemann-Hilbert correspondence and blown up surface defects
Saebyeok Jeong, Nikita Nekrasov
The relationship of two dimensional quantum field theory and isomonodromic deformations of Fuchsian systems has a long history. Recently four-dimensional gauge theo…
A note on chiral trace relations from qq-characters
Saebyeok Jeong, Xinyu Zhang
We study chiral operators in four-dimensional N=2 supersymmetric gauge theories. We provide a general procedure to derive the exact relations among the vacuum expectation values of…
New quantum toroidal algebras from 5D instantons on orbifolds
Jean-Emile Bourgine, Saebyeok Jeong
Quantum toroidal algebras are obtained from quantum affine algebras by a further affinization, and, like the latter, can be used to construct integrable systems. These algebras als…
SCFT/VOA correspondence via -deformation
Saebyeok Jeong
We investigate an alternative approach to the correspondence of four-dimensional superconformal theories and two-dimensional vertex operator algebras, in the framew…