75 citations · 148 across the 4 of their papers we have counts for
5 papers
Extremal N=(2,2) 2D Conformal Field Theories and Constraints of Modularity
Matthias R. Gaberdiel, Sergei Gukov, Christoph A. Keller +2
We explore the constraints on the spectrum of primary fields implied by modularity of the elliptic genus of N=(2,2) 2D CFT's. We show that such constraints have nontrivial implicat…
Rigid Surface Operators
Sergei Gukov, Edward Witten
Surface operators in gauge theory are analogous to Wilson and 't Hooft line operators except that they are supported on a two-dimensional surface rather than a one-dimensional curv…
Gauge Theory, Ramification, And The Geometric Langlands Program
Sergei Gukov, Edward Witten
In the gauge theory approach to the geometric Langlands program, ramification can be described in terms of ``surface operators,'' which are supported on two-dimensional surfaces so…
An Index for 2D field theories with large N=4 superconformal symmetry
Sergei Gukov, Emil Martinec, Gregory Moore +1
We consider families of theories with large N=4 superconformal symmetry. We define an index generalizing the elliptic genus of theories with N=2 symmetry. In contrast to the N=2 ca…
Duality and Fibrations on G_2 Manifolds
Sergei Gukov, Shing-Tung Yau, Eric Zaslow
We argue that G_2 manifolds for M-theory admitting string theory Calabi-Yau duals are fibered by coassociative submanifolds. Dual theories are constructed using the moduli space of…