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U duality and central charges in various dimensions revisited
A geometric formulation which describes extended supergravities in any dimension in the presence of electric and magnetic sources is presented. In this framework, the underlying duality symmetries of
Supersymmetry reduction of N-extended supergravities in four dimensions.
We consider the possible consistent truncation of N-extended supergravities to lower N 0 theories. The truncation, unlike the case of N-extended rigid theories, is non trivial and only in some cases
Matter coupled F(4) gauged supergravity Lagrangian
We construct the so far unknown lagrangian of D = 6, N = 2 F(4) Supergravity coupled to an arbitrary number of vector multiplets whose scalars span the coset manifold SO(4,n)/SO(4) × SO(n). This is
First order description of black holes in moduli space
We show that the second order field equations characterizing extremal solutions for spherically symmetric, stationary black holes are in fact implied by a system of first order equations given in
N=1 and N=2 pure supergravities on a manifold with boundary
A bstractWorking in the geometric approach, we construct the lagrangians of N = 1 and N = 2 pure supergravity in four dimensions with negative cosmological constant, in the presence of a non trivial
Axion gauge symmetries and generalized Chern-Simons terms in N = 1 supersymmetric theories
We compute the extension of the lagrangian of N = 1 supersymmetric theories to the case in which some axion symmetries are gauged. It turns out that generalized Chern-Simons terms appear that were
Extremal black holes in supergravity
We present the main features of the physics of extremal black holes embedded in supersymmetric theories of gravitation, with a detailed analysis of the attractor mechanism for BPS and non-BPS