Spinor exchange in AdSd+1

We explicitly calculate a Witten diagram with general spinor field exchange on (d + 1)-dimensional Euclidean Anti-de Sitter space, which is necessary to evaluate four-point correlation functions with spinor fields when we make use of the AdS/CFT correspondence, especially in supersymmetric cases. We also show that the amplitude can be reduced to a scalar exchange amplitude. We discuss the operator product expansion of the dual conformal field theory by interpreting the short distance expansion of the amplitude according to the AdS/CFT correspondence. (C) 2000 Elsevier Science B.V. All rights reserved.