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arXiv 1406.0191math-phhep-thmath.MPquant-ph
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矩阵Hamilton算子的谱设计:矩阵交织算子的不同构造方法

Spectral Design for Matrix Hamiltonians: Different Methods of Constructing of a Matrix Intertwining Operator

Andrey V. Sokolov

摘要:

本文研究了$n\times n$矩阵非厄米算子与$d/dx$处非退化系数的$n\times n$矩阵线性微分算子的纠缠关系.给出了构造一般形式的一阶$n\times n$矩阵交织算子的几种方法,并讨论了它们之间的相互关系。作为例子,我们构造了由一阶算子与零矩阵势的哈密顿算子交织而成的一般形式的$2\times2$矩阵哈密顿算子.结果表明,借助于一阶纠缠算符,最终的$2\times2$矩阵哈密顿量可以相对于初始矩阵哈密顿量相加,对于不同的能量值,最多可以得到两个束缚态;对于相同的能量值,最多可以得到两个由矢量本征函数描述的束缚态;

英文摘要:

We study intertwining relations for $n\times n$ matrix non-Hermitian, in general, one-dimensional Hamiltonians by $n\times n$ matrix linear differential operators with nondegenerate coefficients at $d/dx$ in the highest degree. Some methods of constructing of $n\times n$ matrix intertwining operator of the first order of general form are proposed and their interrelation is examined. As example we construct $2\times2$ matrix Hamiltonian of general form intertwined by operator of the first order with the Hamiltonian with zero matrix potential. It is shown that one can add for the final $2\times2$ matrix Hamiltonian with respect to the initial matrix Hamiltonian with the help of intertwining operator of the first order either up to two bound states for different energy values or up to two bound states described by vector-eigenfunctions for the same energy value or up to two bound states described by vector-eigenfunction and associated vector-function for the same energy value.

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