Type IIB superstring action in AdS_5 x S^5 background

摘要

We construct the covariant kappa-symmetric superstring action for a type IIBsuperstring on AdS_5 x S^5 background. The action is defined as a 2dsigma-model on the coset superspace SU(2,2|4) / SO(4,1) x SO(5) and is shown tobe the unique one that has the correct bosonic and flat space limits.