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8 papers · 2 filters
On chiral quantum superspaces
D. Cervantes, R. Fioresi, M. A. Lledo
We give a quantum deformation of the chiral Minkowski superspace in 4 dimensions embedded as the big cell into the chiral conformal superspace. Both deformations are realized as qu…
Quantum twistors
D. Cervantes, R. Fioresi, M. A. Lledó +1
We compute explicitly a star product on the Minkowski space whose Poisson bracket is quadratic. This star product corresponds to a deformation of the conformal spacetime, whose big…
(p,q) D=3 Poincare supergravities from Lie algebra expansions
Jose A. de Azcarraga, Jose M. Izquierdo
We use the expansion of superalgebras procedure (summarized in the text) to derive Chern-Simons (CS) actions for the (p,q)-Poincare supergravities in three-dimensional spacetime. A…
Gravitational waves in the presence of a cosmological constant
José Bernabeu, Domènec Espriu, Daniel Puigdomènech
We derive the effects of a non-zero cosmological constant on gravitational wave propagation in the linearized approximation of general relativity. In this approximation we cons…
Non-extremal black holes of N=2, d=4 supergravity
Pietro Galli, Tomas Ortin, Jan Perz +1
We propose a generic recipe for deforming extremal black holes into non-extremal black holes and we use it to find and study the non-extremal black-hole solutions of several N=2,d=…
Extended supersymmetry in massless conformal higher spin theory
Igor A. Bandos, Jose A. de Azcarraga, Carlos Meliveo
We propose superfield equations in tensorial N-extended superspaces to describe the N=2,4,8 supersymmetric generalizations of free conformal higher spin theories. These can be obta…