Two-loop approximation in quantum gravitation
Bukhbinder I. L. , Odintsov S. D. , Fonarev O. A.
An effective two-loop action in a multidimensional quantum gravitation, set against a MN X TK background, where MN is the TV-dimensional Minkowski space and TK — К is a, ΑΓ-dimensional torus, has been calculated for the first time.