Projective relativistic dynamics from a quantum Lorentz algebra: time-dependent deformed Hamiltonians on (anti-)de Sitter spaces
Abstract
A (non-standard) quantum deformation of the Lorentz algebra so(1,3) is used to construct novel time-dependent Hamiltonian systems on the (anti-)de Sitter spacetimes in (1+1)-dimensions. The specific deformation considered here contains, among others, the non-standard quantum deformation of sl(2, ℝ) and that of the `book' algebra b2 as quantum subalgebras. The guiding idea is to apply the theory of Poisson--Hopf deformations of Lie--Hamilton systems to the Lorentz deformation, giving rise to a broad family of time-dependent deformed systems that share the same deformed Poisson--Hopf Lorentz algebra symmetry. In particular, this approach provides Hamiltonian vector fields expressed in terms of certain projective canonical variables, which, in turn, are related to the usual Beltrami variables via a canonical transformation. Under this construction, it is shown that the underlying Lorentizan spaces possess constant curvature κ and the quantum deformation parameter z can be identified with κ, such that the cosmological constant is Λ=−z≡ −κ. Therefore, we deal with the anti-de Sitter, de Sitter and Minkowskian spaces for z>0, z<0 and z=0 (the undeformed case), respectively. Finally, as applications, we study time-dependent deformed oscillators on the (anti-)de Sitter spaces in detail, as well as time-dependent deformed Bateman and generalised coupled Caldirola--Kanai Hamiltonians.
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BibTeX
@misc{campoamorstursberg2026projective,
title = {{Projective relativistic dynamics from a quantum Lorentz algebra: time-dependent deformed Hamiltonians on (anti-)de Sitter spaces}},
author = {Rutwig Campoamor-Stursberg and Oscar Carballal and Francisco J. Herranz},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.02242},
eprint = {2611.02242},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.02242},
}
RIS
TY - UNPB
TI - Projective relativistic dynamics from a quantum Lorentz algebra: time-dependent deformed Hamiltonians on (anti-)de Sitter spaces
AU - Rutwig Campoamor-Stursberg
AU - Oscar Carballal
AU - Francisco J. Herranz
PY - 2026
DA - 2026/11/01
PB - arXiv
DO - 10.48550/arxiv.2611.02242
UR - https://arxiv.org/abs/2611.02242
AB - A (non-standard) quantum deformation of the Lorentz algebra so(1,3) is used to construct novel time-dependent Hamiltonian systems on the (anti-)de Sitter spacetimes in (1+1)-dimensions. The specific deformation considered here contains, among others, the non-standard quantum deformation of sl(2, ℝ) and that of the `book' algebra b_2 as quantum subalgebras. The guiding idea is to apply the theory of Poisson--Hopf deformations of Lie--Hamilton systems to the Lorentz deformation, giving rise to a broad family of time-dependent deformed systems that share the same deformed Poisson--Hopf Lorentz algebra symmetry. In particular, this approach provides Hamiltonian vector fields expressed in terms of certain projective canonical variables, which, in turn, are related to the usual Beltrami variables via a canonical transformation. Under this construction, it is shown that the underlying Lorentizan spaces possess constant curvature κ and the quantum deformation parameter z can be identified with κ, such that the cosmological constant is Λ=−z≡ −κ. Therefore, we deal with the anti-de Sitter, de Sitter and Minkowskian spaces for z>0, z<0 and z=0 (the undeformed case), respectively. Finally, as applications, we study time-dependent deformed oscillators on the (anti-)de Sitter spaces in detail, as well as time-dependent deformed Bateman and generalised coupled Caldirola--Kanai Hamiltonians.
ER -