Introduction to Supergravities in Diverse Dimensions ∗

Supergravities in four and higher dimensions are reviewed. We discuss the action and its local symmetries of N = 1 supergravity in four dimensions, possible types of spinors in various dimensions, field contents of supergravity multiplets, non-compact bosonic symmetries, non-linear sigma models, duality symmetries of antisymmetric tensor fields and super p-branes. An expanded version of a review talk at YITP workshop on Supersymmetry, 27 – 30 March, 1996 † e-mail: [email protected]