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arXiv 2103.04385math-phhep-thmath.MP
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极小${\mathbb Z}_2\times{\mathbb Z}_2$ -分次李(超)代数的分类及其应用

Classification of minimal ${\mathbb Z}_2\times{\mathbb Z}_2$-graded Lie (super)algebras and some applications

Zhanna Kuznetsova, Francesco Toppan

摘要:

本文给出了实数域和复数域上由$4$生成元张成的无空分次扇区的极小${\mathbb Z}_2\times{\mathbb Z}_2$ -分次李代数和李超代数的分类.通过求解相应的分次Jacobi恒等式所施加的约束,得到了不等价的分次李(超)代数。这个数学结果的动机是系统地研究动力系统在分次(超)代数下不变量的性质。最近的工作只关注一维${\mathbb Z}_2\times{\mathbb Z}_2$ -分次Poincaré超代数的特殊情况。作为应用,我们能够扩展某些结构最初介绍了这个特殊的超代数,以其他上市${\mathbb Z}_2\times{\mathbb Z}_2$ -分次(超)代数。我们特别提到了${\mathbb Z_2}\times{\mathbb Z}_2$ -分次超空间和不变动力系统(包括经典世界线西格玛模型和量子哈密顿)的概念。作为进一步的副产品,我们指出,相反的${\mathbb Z}_2\times{\mathbb Z}_2$ -分次超代数,一个理论不变下的${\mathbb Z}_2\times{\mathbb Z}_2$ -分次代数意味着存在的普通玻色子和三种不同类型的奇异玻色子,与奇异玻色子的不同类型之间的反交换。

英文摘要:

This paper presents the classification, over the fields of real and complex numbers, of the minimal ${\mathbb Z}_2\times{\mathbb Z}_2$-graded Lie algebras and Lie superalgebras spanned by $4$ generators and with no empty graded sector. The inequivalent graded Lie (super)algebras are obtained by solving the constraints imposed by the respective graded Jacobi identities. A motivation for this mathematical result is to systematically investigate the properties of dynamical systems invariant under graded (super)algebras. Recent works only paid attention to the special case of the one-dimensional ${\mathbb Z}_2\times{\mathbb Z}_2$-graded Poincaré superalgebra. As applications, we are able to extend certain constructions originally introduced for this special superalgebra to other listed ${\mathbb Z}_2\times{\mathbb Z}_2$-graded (super)algebras. We mention, in particular, the notion of ${\mathbb Z_2}\times{\mathbb Z}_2$-graded superspace and of invariant dynamical systems (both classical worldline sigma models and quantum Hamiltonians). As a further byproduct we point out that, contrary to ${\mathbb Z}_2\times{\mathbb Z}_2$-graded superalgebras, a theory invariant under a ${\mathbb Z}_2\times{\mathbb Z}_2$-graded algebra implies the presence of ordinary bosons and three different types of exotic bosons, with exotic bosons of different types anticommuting among themselves.

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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