77 citations · 278 across the 8 of their papers we have counts for
18 papers · 1 filter
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…
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…
On the absence of BPS preonic solutions in IIA and IIB supergravities
Igor A. Bandos, Jose A. de Azcarraga, Oscar Varela
We consider the present absence of 31 out of 32 supersymmetric solutions in supergravity i.e., of solutions describing BPS preons. A recent result indicates that (bosonic) BPS preo…
Massive relativistic particle model with spin from free two-twistor dynamics and its quantization
Jose A. de Azcarraga, Andrzej Frydryszak, Jerzy Lukierski +1
We consider a relativistic particle model in an enlarged relativistic phase space M^{18} = (X_μ, P_μ, η_α, \oeta_\dalpha, σ_α, \osigma_\dalpha, e, ϕ), which is derived from the fre…