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Mirror Symmetry and Closed String Tachyon Condensation
Cumrun Vafa
We study closed string tachyon condensation using the RG flow of the worldsheet theory. In many cases the worldsheet theory enjoys N=2 supersymmetry, which provides analytic contro…
Manifolds, Mirror Symmetry and Geometric Engineering
Mina Aganagic, Cumrun Vafa
We construct Calabi-Yau geometries with wrapped D6 branes which realize supersymmetric quiver theories, and study the corresponding geometric transitions. This a…
Framed knots at large N
Marcos Marino, Cumrun Vafa
We study the framing dependence of the Wilson loop observable of U(N) Chern-Simons gauge theory at large N. Using proposed geometrical large N dual, this leads to a direct computat…
On Domain Walls of N=1 Supersymmetric Yang-Mills in Four Dimensions
Bobby Acharya, Cumrun Vafa
We study the BPS domain walls of supersymmetric Yang-Mills for arbitrary gauge group. We describe the degeneracies of domain walls interpolating between arbitrary pairs of vacua. A…
Brane/anti-Brane Systems and U(N|M) Supergroup
Cumrun Vafa
We show that in the context of topological string theories N branes and M anti-branes give rise to Chern-Simons gauge theory with the gauge supergroup . We also identify a…