arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.2355hep-th
收藏

$κ$-Minkowski时空中的变形振子代数和QFT

Deformed Oscillator Algebras and QFT in $κ$-Minkowski Spacetime

T. R. Govindarajan, Kumar S. Gupta, E. Harikumar, S. Meljanac, D. Meljanac

摘要:

本文研究了$κ$-Minkowski时空中量子场的形变统计和振子代数。从与星积相关的扭曲中得到的扭曲翻转算子需要扩大庞加莱代数以包括伸缩生成元。在这里,我们提出了一个新的概念,一个完全协变翻转算子,并表明,在变形参数的第一顺序,它可以完全表示在庞加莱发电机单独。对应于扭曲和协变翻转算子的$R$-矩阵进行比较,直到变形参数的一阶,它们被示出是不同的。我们还构造了$κ$-Minkowski时空中标量场模展开中产生的产生算符和湮灭算符的变形代数。我们得到了一个大类这样的新的变形代数,对于某些选择的实现,减少到文献中已知的结果。

英文摘要:

In this paper we study the deformed statistics and oscillator algebras of quantum fields defined in $κ$-Minkowski spacetime. The twisted flip operator obtained from the twist associated with the star product requires an enlargement of the Poincaré algebra to include the dilatation generators. Here we propose a novel notion of a fully covariant flip operator and show that to the first order in the deformation parameter it can be expressed completely in terms of the Poincaré generators alone. The $R$-matrices corresponding to the twisted and the covariant flip operators are compared up to first order in the deformation parameter and they are shown to be different. We also construct the deformed algebra of the creation and annihilation operators that arise in the mode expansion of a scalar field in $κ$-Minkowski spacetime. We obtain a large class of such new deformed algebras which, for certain choice of realizations, reduce to results known in the literature.

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。

↑