920 citations · 3.6k across the 21 of their papers we have counts for
21 papers
Superstring Theory on AdS_2 x S^2 as a Coset Supermanifold
N. Berkovits, M. Bershadsky, T. Hauer +2
We quantize the superstring on the AdS_2 x S^2 background with Ramond-Ramond flux using a PSU(1,1|2)/U(1) x U(1) sigma model with a WZ term. One-loop conformal invariance of the mo…
Sigma Model as a Conformal Field Theory
Michael Bershadsky, Slava Zhukov, Arkady Vaintrob
We discuss the sigma model on the supergroup manifold. We demonstrate that this theory is exactly conformal. The chiral algebra of this model is given by some extension…
F-Theory with Quantized Fluxes
Michael Bershadsky, Tony Pantev, Vladimir Sadov
We present evidence that the CHL string in eight dimensions is dual to F-theory compactified on an elliptic K3 with a monodromy group. The monodromy group all…
String Expansion as Large N Expansion of Gauge Theories
Michael Bershadsky, Zurab Kakushadze, Cumrun Vafa
We consider string perturbative expansion in the presence of D-branes imbedded in orbifolded space-time. In the regime where the string coupling is weak and , the string p…
Large N limit of orbifold field theories
Michael Bershadsky, Andrei Johansen
We consider certain orbifoldization of the field theories that leads to field theories in 4 dimensions. These theories were recently analyzed using th…
F-theory and linear sigma models
M. Bershadsky, T. M. Chiang, B. R. Greene +2
We present an explicit method for translating between the linear sigma model and the spectral cover description of SU(r) stable bundles over an elliptically fibered Calabi-Yau mani…