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arXiv math-ph/0610024math-phhep-thmath.MPmath.SPnucl-thphysics.atom-phquant-ph
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非厄米、非对角化哈密顿量的非线性超对称性:I。常规属性

Non-linear Supersymmetry for non-Hermitian, non-diagonalizable Hamiltonians: I. General properties

A. A. Andrianov, F. Cannata, A. V. Sokolov

摘要:

我们研究复杂的潜力和相关的非对角化的哈密顿量,特别强调相关的功能和约旦细胞的正式定义。本文研究了复势的非线性超对称性,给出了其结构定理。本文给出了不可对角化哈密顿量在超对称变换下不变的势函数类,并给出了有关相关函数性质的几个结果。我们评论软非厄米PT对称哈密顿这些结果的适用性。在指标定理中,对SUSY(Darboux)变换在SUSY伙伴哈密顿量中Jordan胞的增减中所起的作用进行了深入的分析和总结。不可对角化的哈密尔顿算子的性质以及指标定理在非厄米无反射哈密尔顿算子的可解例子中得到了说明。严格的证明被归入本文的第二部分。最后,讨论了阈值处束缚态能量为零的连续谱和离散谱在恒等式分解中的一些特点。

英文摘要:

We study complex potentials and related non-diagonalizable Hamiltonians with special emphasis on formal definitions of associated functions and Jordan cells. The nonlinear SUSY for complex potentials is considered and the theorems characterizing its structure are presented. We present the class of potentials invariant under SUSY transformations for non-diagonalizable Hamiltonians and formulate several results concerning the properties of associated functions . We comment on the applicability of these results for softly non-Hermitian PT-symmetric Hamiltonians. The role of SUSY (Darboux) transformations in increasing/decreasing of Jordancells in SUSY partner Hamiltonians is thoroughly analyzed and summarized in the Index Theorem. The properties of non-diagonalizable Hamiltonians as well as the Index Theorem are illustrated in the solvable examples of non-Hermitian reflectionless Hamiltonians . The rigorous proofs are relegated to the Part II of this paper. At last, some peculiarities in resolution of identity for discrete and continuous spectra with a zero-energy bound state at threshold are discussed.

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