2026-04-28T21:56:54Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/47302022-12-20T11:45:35Zcom_10259.4_2557com_10259_5086com_10259_2604col_10259.4_2558
Repositorio Institucional de la Universidad de Burgos
author
Ballesteros Castañeda, Ángel
author
Bruno, N. Rossano
author
Herranz Zorrilla, Francisco José
2018-02-06T08:15:38Z
2018-02-06T08:15:38Z
2017
1687-7357
http://hdl.handle.net/10259/4730
10.1155/2017/7876942
The -deformation of the (2 + 1)D anti-de Sitter, Poincaré, and de Sitter groups is presented through a unified approach in which the curvature of the spacetime (or the cosmological constant) is considered as an explicit parameter. The Drinfel’d-double and the Poisson–Lie structure underlying the -deformation are explicitly given, and the three quantum kinematical groups are obtained as quantizations of such Poisson–Lie algebras. As a consequence, the noncommutative (2 + 1)D spacetimes that generalize the -Minkowski space to the (anti-)de Sitter ones are obtained. Moreover, noncommutative 4D spaces of (time-like) geodesics can be defined, and they can be interpreted as a novel possibility to introduce noncommutative worldlines. Furthermore, quantum (anti-)de Sitter algebras are presented both in the known basis related to 2 + 1 quantum gravity and in a new one which generalizes the bicrossproduct one. In this framework, the quantum deformation parameter is related to the Planck length, and the existence of a kind of “duality” between the cosmological constant and the Planck scale is also envisaged.
eng
Attribution 4.0 International
Noncommutative relativistic spacetimes and worldlines from 2 + 1 quantum (Anti-)de sitter groups
info:eu-repo/semantics/article
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URL
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