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arXiv 2005.10759hep-thmath-phmath.MP
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${\mathbb Z}_2\times {\mathbb Z}_2$ -分级力学:量子化

${\mathbb Z}_2\times {\mathbb Z}_2$-graded mechanics: the quantization

N. Aizawa, Z. Kuznetsova, F. Toppan

摘要:

在前一篇论文arXiv:2003.06470中,我们引入了${\mathbb Z}_2\times{\mathbb Z}_2$ -分次经典力学的概念,并给出了一个一般的框架来构造在拉格朗日环境下在${\mathbb Z}_2\times{\mathbb Z}_2$ -分次超代数下不变量的世界线西格玛模型.在这项工作中,我们首先讨论这些模型的经典哈密顿公式,然后介绍它们的正则量子化。作为构造的最简单的应用,我们恢复了Bruce和Duplij在arXiv:1904.06975中引入的${\mathbb Z}_2\times{\mathbb Z}_2$ -分级量子哈密顿量。我们证明了这是第一个例子的一大类${\mathbb Z}_2\times{\mathbb Z}_2$ -分次量子模型。我们推导出特别是相互作用的多粒子量子哈密顿厄米特,矩阵,微分算子。相互作用项在矩阵中显示为非对角项。构造的Noether收费,无论是经典的和量子的,提出。全面讨论了量子哈密顿量所具有的不同的${\mathbb Z}_2\times{\mathbb Z}_2$ -分级对称性。

英文摘要:

In the previous paper arXiv:2003.06470 we introduced the notion of ${\mathbb Z}_2\times{\mathbb Z}_2$-graded classical mechanics and presented a general framework to construct, in the Lagrangian setting, the worldline sigma models invariant under a ${\mathbb Z}_2\times{\mathbb Z}_2$-graded superalgebra. In this work we discuss at first the classical Hamiltonian formulation of some of these models and later present their canonical quantization. As the simplest application of the construction we recover the ${\mathbb Z}_2\times{\mathbb Z}_2$-graded quantum Hamiltonian introduced by Bruce and Duplij in arXiv:1904.06975. We prove that this is the first example of a large class of ${\mathbb Z}_2\times{\mathbb Z}_2$-graded quantum models. We derive in particular interacting multiparticle quantum Hamiltonians given by Hermitian, matrix, differential operators. The interacting terms appear as non-diagonal entries in the matrices. The construction of the Noether charges, both classical and quantum, is presented. A comprehensive discussion of the different ${\mathbb Z}_2\times{\mathbb Z}_2$-graded symmetries possessed by the quantum Hamiltonians is given.

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