arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.14540quant-ph
收藏

一类具有三对角矩阵表示的非厄米哈密顿量研究

On a class of non-Hermitian Hamiltonians with tridiagonal matrix representation

Francisco M. Fernández

AI总结:

本研究探讨一类三对角矩阵形式的非厄米哈密顿量,证明其可通过厄米正定对角算符实现准厄米性或与厄米算符相似,揭示开放与周期边界条件的关键差异,并用两个常用简单模型验证理论。

摘要:

我们证明,部分具有三对角矩阵表示的非厄米哈密顿算符可能是准厄米的,或与厄米算符相似。在本文讨论的这类哈密顿算符中,变换由一个厄米正定对角算符给出。我们发现开放边界条件与周期性边界条件之间存在重要差异,并通过两个常用的简单模型对理论结果进行了例证。

英文摘要:

We show that some non-Hermitian Hamiltonian operators with tridiagonal matrix representation may be quasi Hermitian or similar to Hermitian operators. In the class of Hamiltonian operators discussed here the transformation is given by a Hermitian, positive-definite, diagonal operator. We show that there is an important difference between open boundary conditions and periodic ones. We illustrate the theoretical results by means of two simple, widely used, models.

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。

↑