Superstring perturbation theory and Ramond-Ramond backgrounds
Superstring perturbation theory and Ramond-Ramond backgrounds
We consider perturbative type II superstring theory in the covariant NSR formalism in the presence of NSNS and RR backgrounds. A concrete example that we have in mind is the geometry of D3-branes which in the near-horizon region is ${\mathrm{AdS}}_{5}\ifmmode\times\else\texttimes\fi{}{\mathrm{S}}_{5},$ although our methods may be applied to other backgrounds as …