NEW COUPLINGS OF 6-DIMENSIONAL SUPERGRAVITY

We describe the couplings of six-dimensional supergravity, which conta in a self-dual tensor multiplet, to n(T) anti-self-dual tensor matter multiplets, n(v) vector multiplets and n(H) hypermultiplets. The scala r fields of the tensor multiplets form a coset SO(n(T), 1)/SO(n(T)), w hile the scalars in the hypermultiplets form quaternionic Kahler-symme tric spaces, the generic example being Sp(n(H), 1)/Sp(n(H)) circle tim es Sp(1). The gauging of the compact subgroup Sp(n(H)) circle times Sp (1) is also described. These results generalize previous ones in the l iterature on matter couplings of N = 1 supergravity in six dimensions. (C) 1997 Elsevier Science B.V.