5-dim superconformal index with enhanced E n global symmetry

Exacting N = 4 Superconformal Symmetry

N = 1 Superconformal Symmetry in 4 - dimensions

The N = 1, d = 4 superconformal group is studied and its representations are discussed. Under superconformal transformations, left invariant derivatives and some class of superfields, including supercurrents, are shown to follow these representations. In other words, these superfields are quasi-primary by analogy with two dimensional conformal field theory. Based on these results, we find the g...

- 04 / A 015 EFI - 04 - 10 An Index for 2 D field theories with large N = 4 superconformal symmetry

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 case, the new index constrains part of the non-BPS spectrum. Motivated by aspects of the AdS/CFT correspondence we study the index in the examples of symmetric product theories. We give a physical interpretation o...

Nonlinear superconformal symmetry

We discuss two different nonlinear generalizations of the osp(2|2) supersymmetry which arise in superconformal mechanics and fermion-monopole models. Submitted to the Proceedings of the International Workshop “Supersymmetries and Quantum Symmetries” (SQS’03, Dubna, Russia, 24-29 July 2003)

Ads/cft Dualities Involving Large 2d N=4 Superconformal Symmetry

We study the duality between string theory on AdS3 × S × S and twodimensional conformal theories with large N = 4 superconformal algebra Aγ. We discuss configurations of intersecting branes which give rise to such near-horizon geometries. We compute the Kaluza-Klein spectrum and propose that the boundary superconformal theory can be described by a sigma model on a suitable symmetric product spa...