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arXiv 2108.02683math-phgr-qchep-thmath.MPmath.QA
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量子Lorentz子群的非对易(A)dS和Minkowski时空

Noncommutative (A)dS and Minkowski spacetimes from quantum Lorentz subgroups

Angel Ballesteros, Ivan Gutierrez-Sagredo, Francisco J. Herranz

摘要:

给出了使(3+1)维(A)dS群和Poincaré群产生量子形变使其Lorentz扇区为量子子群的经典$r$ -矩阵的完全分类.发现存在三类这样的$r$ -矩阵,其中之一是一种新的双参数矩阵。在局部坐标和环境坐标下,分别构造了对应于这三种变形的(A)dS和Minkowski Poisson齐性空间.它们被量子化,从而产生了相关的非对易时空,在闵可夫斯基情况下,它们自然地用量子零平面坐标表示,并且它们总是由齐次二次代数定义。最后,非相对论性和超相对论性的限制,产生新的牛顿和卡罗尔非交换时空也提出。

英文摘要:

The complete classification of classical $r$-matrices generating quantum deformations of the (3+1)-dimensional (A)dS and Poincaré groups such that their Lorentz sector is a quantum subgroup is presented. It is found that there exists three classes of such $r$-matrices, one of them being a novel two-parametric one. The (A)dS and Minkowskian Poisson homogeneous spaces corresponding to these three deformations are explicitly constructed in both local and ambient coordinates. Their quantization is performed, thus giving rise to the associated noncommutative spacetimes, that in the Minkowski case are naturally expressed in terms of quantum null-plane coordinates, and they are always defined by homogeneous quadratic algebras. Finally, non-relativistic and ultra-relativistic limits giving rise to novel Newtonian and Carrollian noncommutative spacetimes are also presented.

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