HET journal club: Alessandra Cagnazzo (Nordita) – Niels Bohr Institute - University of Copenhagen

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Niels Bohr Institute > Calendar > 2012 > HET journal club: Ales...

HET journal club: Alessandra Cagnazzo (Nordita)

WZW term in Permutation Cosets

The study of Superstring Theories on AdS backgrounds is important in the context of the Gauge/Gravity correspondence. These theories can be reduced, under certain assumptions, to Sigma Models on semi-symmetric super-cosets. For a peculiar class of these cosets one can also introduce a WZW term. This corresponds to studying a Superstring Theory on a background supported by a mixture of RR and NSNS fluxes, as can happen for theories on AdS_3xS^3xM_4. I will show the effect of this term on Integrability, Kappa symmetry and conformity of the theory, computing also the BMN spectrum in some relevant case for the AdS_3/CFT_2 correspondence.