5 papers · 1 filter
On the Covariant Quantization of Green-Schwarz Superstring and Brink--Schwarz Superparticle
M. Caicedo, M Lledo, A. Restuccia +1
The effective action for the Brink-Schwarz Superparticle is constructed in an infinite dimensional phase space using a gauge invariant formulation.
On the Embedding of Space-Time Symmetries into Simple Superalgebras
R. D'Auria, S. Ferrara, M. A. Lledo
We explore the embedding of Spin groups of arbitrary dimension and signature into simple superalgebras in the case of extended supersymmetry. The R-symmetry, which generically is n…
Supersymmetric Field Theories on Deformed Space-Time
M. A. Lledó
Field theories on "quantum" or deformed space-time are considered here. The Moyal-Weyl deformation breaks the Lorentz invariance of the theory, but one can still require invariance…
Black Holes and U-duality in Diverse Dimensions
M. A. Lledó
In this paper we review some properties of BPS black holes of supergravities with n=32,16 supersymmetries. The BPS condition, a condition on the eigenvalues of the central charge m…
SU(2) Poisson-Lie T duality
M. A. Lledo, V. S. V. Varadarajan
Poisson-Lie target space duality is a framework where duality transformations are properly defined. In this letter we investigate the pair of sigma models defined by the double SO(…