151 citations · 757 across the 20 of their papers we have counts for
20 papers
Generalized cosmological term from Maxwell symmetries
Jose A. de Azcarraga, Kiyoshi Kamimura, Jerzy Lukierski
By gauging the Maxwell spacetime algebra the standard geometric framework of Einstein gravity with cosmological constant term is extended by adding six fourvector fields A_μ^{ab}(x…
Galilean Superconformal Symmetries
J. A. de Azcarraga, J. Lukierski
We consider the non-relativistic c -> \infty contraction limit of the (N=2k)- extended D=4 superconformal algebra su(2,2;N), introducing in this way the non-relativistic (N=2k)-ext…
Cohomology of Filippov algebras and an analogue of Whitehead's lemma
Jose A. de Azcarraga, J. M Izquierdo
We show that two cohomological properties of semisimple Lie algebras also hold for Filippov (n-Lie) algebras, namely, that semisimple n-Lie algebras do not admit non-trivial centra…
Expansions of algebras and superalgebras and some applications
J. A. de Azcarraga, J. M. Izquierdo, M. Picon +1
After reviewing the three well-known methods to obtain Lie algebras and superalgebras from given ones, namely, contractions, deformations and extensions, we describe a fourth metho…
On D=11 supertwistors, superparticle quantization and a hidden SO(16) symmetry of supergravity
Igor A. Bandos, Jose A. de Azcarraga, Dmtri P. Sorokin
We consider a covariant quantization of the D=11 massless superparticle in the supertwistor framework. D=11 supertwistors are highly constrained, but the interpretation of their bo…
BPS preons and higher spin theory in D=4, 6, 10
Igor A. Bandos, Jose A. de Azcarraga
We briefly review here the notion of BPS preons, the hypothetical constituents of M-theory, emphasizing its generalization to arbitrary dimensions D and its relation to higher spin…