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arXiv 2001.02794quant-ph
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用超对称算法构造全实谱的非厄米哈密顿算子

On the construction of non-Hermitian Hamiltonians with all-real spectra through supersymmetric algorithms

Kevin Zelaya, Sara Cruz y Cruz, Oscar Rosas-Ortiz

摘要:

通过超对称算法对两个不同量子系统的能谱进行配对。其中一个系统是厄米特的,另一个系统的特点是复值的潜力,他们都只有真正的本征值在他们的频谱。连接这些系统的超势是复值的,由Ermakov方程的解参数化,并且可以以非线性形式或作为适当选择的复值函数的对数导数来表示。非厄米系统可以构造成宇称时间对称的或非宇称时间对称的。

英文摘要:

The energy spectra of two different quantum systems are paired through supersymmetric algorithms. One of the systems is Hermitian and the other is characterized by a complex-valued potential, both of them with only real eigenvalues in their spectrum. The superpotential that links these systems is complex-valued, parameterized by the solutions of the Ermakov equation, and may be expressed either in nonlinear form or as the logarithmic derivative of a properly chosen complex-valued function. The non-Hermitian systems can be constructed to be either parity-time-symmetric or non-parity-time-symmetric.

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