Type IIB superstring action in AdS_5 x S^5 background
arXiv:hep-th/9805028 · doi:10.1016/S0550-3213(98)00570-7
Abstract
We construct the covariant kappa-symmetric superstring action for a type IIB superstring on AdS_5 x S^5 background. The action is defined as a 2d sigma-model on the coset superspace SU(2,2|4) / SO(4,1) x SO(5) and is shown to be the unique one that has the correct bosonic and flat space limits.
18 pages, latex. v2: Minor corrections, extended comment on conformal invariance of the 2d theory; v3,v4: Few signs corrected