RT info:eu-repo/semantics/article T1 Curved momentum spaces from quantum (Anti-)de Sitter groups in (3+1) dimensions A1 Ballesteros Castañeda, Ángel A1 Gubitosi, G. A1 Gutiérrez Sagredo, Iván A1 Herranz, F.J. AB Curved momentum spaces associated to the k-deformation of the (3+1) de Sitter and Anti-de Sitter algebras are constructed as orbits of suitable actions of the dual Poisson-Lie group associated to the k-deformation with non-vanishing cosmological constant. The k-de Sitter and k-Anti-de Sitter curved momentum spaces are separately analysed, and they turn out to be, respectively, half of the (6+1)-dimensional de Sitter space and half of a space with SO(4, 4) invariance. Such spaces are made of the momenta associated to spacetime translations and the ‘hyperbolic’ momenta associated to boost transformations. The known k-Poincaré curved momentum space is smoothly recovered as the vanishing cosmological constant limit from both of the constructions. PB APS Physics SN 2470-0029 YR 2018 FD 2018 LK http://uvadoc.uva.es/handle/10324/33631 UL http://uvadoc.uva.es/handle/10324/33631 LA eng NO Physical Review D, 2018, vol. 97, n. 10. 15 p. NO Producción Científica DS UVaDOC RD 23-nov-2024