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arXiv 1209.4980math-phcond-mat.mes-hallhep-thmath.MP
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二维Dirac-like算子的势代数的应用

Applications of the potential algebras of the two-dimensional Dirac-like operators

Vit Jakubsky

摘要:

势代数可以有效地用于量子系统的分析。在这篇文章中,我们专注于一个可分离的,2x2矩阵哈密顿量的一阶导数描述的系统。我们发现积分的运动的哈密尔顿关闭中心扩展so(3),所以(2,1)或振荡器代数。该代数框架被用于构造由(2+1)维Dirac方程描述的物理上有趣的可解模型。并将其应用于开笼富勒烯的描述,计算了低能载流子的能量和波函数。势代数也用于构造形状不变的一维狄拉克算子。我们表明,形状不变性的一阶算子是与N=4的非线性超对称,这是由本地和非本地超荷。与形状不变的非相对论系统的关系也进行了讨论。

英文摘要:

Potential algebras can be used effectively in the analysis of the quantum systems. In the article, we focus on the systems described by a separable, 2x2 matrix Hamiltonian of the first order in derivatives. We find integrals of motion of the Hamiltonian that close centrally extended so(3), so(2,1) or oscillator algebra. The algebraic framework is used in construction of physically interesting solvable models described by (2+1) dimensional Dirac equation. It is applied in description of open-cage fullerenes where the energies and wave functions of low-energy charge-carriers are computed. The potential algebras are also used in construction of shape-invariant, one-dimensional Dirac operators. We show that shape-invariance of the first-order operators is associated with the N=4 nonlinear supersymmetry which is represented by both local and nonlocal supercharges. The relation to the shape-invariant non-relativistic systems is discussed as well.

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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