Ivashchuk, V.D.; Melnikov, V.N.
(Symmetry, Integrability and Geometry: Methods and Applications, 2009)
A multidimensional gravitational model containing scalar fields and antisymmetric forms is considered. The manifold is chosen in the form M = M0 × M1 × ... × Mn, where Mi are Einstein spaces (i ≥ 1). The sigma-model approach ...