527 citations · 610 across the 5 of their papers we have counts for
12 papers · 1 filter
Instanton partition functions in N=2 SU(N) gauge theories with a general surface operator, and their W-algebra duals
Niclas Wyllard
We write down an explicit conjecture for the instanton partition functions in 4d N=2 SU(N) gauge theories in the presence of a certain type of surface operator. These surface opera…
W-algebras and surface operators in N=2 gauge theories
Niclas Wyllard
A general class of W-algebras can be constructed from the affine sl(N) algebra by (quantum) Drinfeld-Sokolov reduction and are classified by partitions of N. Surface operators in a…
A_{N-1} conformal Toda field theory correlation functions from conformal N=2 SU(N) quiver gauge theories
Niclas Wyllard
We propose a relation between correlation functions in the 2d A_{N-1} conformal Toda theories and the Nekrasov instanton partition functions in certain conformal N=2 SU(N) 4d quive…
Towards relating the kappa-symmetric and pure-spinor versions of the supermembrane
Mirela Babalic, Niclas Wyllard
We study the relation between the kappa-symmetric formulation of the supermembrane in eleven dimensions and the pure-spinor version. Recently, Berkovits related the Green-Schwarz a…
Bound states in N = 4 SYM on T^3: Spin(2n) and the exceptional groups
Mans Henningson, Niclas Wyllard
The low energy spectrum of (3+1)-dimensional N=4 supersymmetric Yang-Mills theory on a spatial three-torus contains a certain number of bound states, characterized by their discret…
Lower-dimensional pure-spinor superstrings
P. A. Grassi, N. Wyllard
We study to what extent it is possible to generalise Berkovits' pure-spinor construction in d=10 to lower dimensions. Using a suitable definition of a ``pure'' spinor in d=4,6, we…