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arXiv 2404.01792hep-thmath-phmath.MP
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双重κ-形变Yang模型的具体实现与星积

Realizations and star-product of doubly $κ$-deformed Yang models

T. Martinić-Bilać, S. Meljanac, S. Mignemi

AI总结:

本文研究Yang代数及其κ-形变推广在扩展相空间上的具体实现,通过构造Hopf结构与twist解决非对易弯曲时空中平移和Lorentz生成元带来的定义困难。

摘要:

Yang代数很早以前就被提出,作为Snyder代数在弯曲背景时空情形下的推广。它同时包含Snyder代数和de Sitter代数作为子代数,因此可以被视为非对易弯曲时空的一个模型。与标准的非对易几何模型相比,它的一个特殊之处在于包含平移生成元和Lorentz生成元,因此Hopf代数的定义以及与原始变量相共轭的变量的物理解释并非平凡。本文考虑Yang代数及其κ-形变推广在扩展相空间上的具体实现,并以此方式定义Hopf结构和twist。

英文摘要:

The Yang algebra was proposed a long time ago as a generalization of the Snyder algebra to the case of curved background spacetime. It includes as subalgebras both the Snyder and the de Sitter algebras and can therefore be viewed as a model of noncommutative curved spacetime. A peculiarity with respect to standard models of noncommutative geometry is that it includes translation and Lorentz generators, so that the definition of a Hopf algebra and the physical interpretation of the variables conjugated to the primary ones is not trivial. In this paper we consider the realizations of the Yang algebra and its $κ$-deformed generalization on an extended phase space and in this way we are able to define a Hopf structure and a twist.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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