Critical parameters for non-hermitian Hamiltonians

被引：5

作者：

Fernandez, Francisco M. ^{[1
]}

Garcia, Javier ^{[1
]}

机构：

[1] UNLP, CCT La Plata CONICET, INIFTA, Div Quim Teor, RA-1900 La Plata, Buenos Aires, Argentina

来源：

APPLIED MATHEMATICS AND COMPUTATION | 2014年 / 247卷

关键词：

PT symmetry; Non-hermitian Hamiltonians; Critical parameters; Exceptional points; Diagonalization method; EXCEPTIONAL POINTS; SQUARE-WELL; SPONTANEOUS BREAKDOWN; SYMMETRY; OPERATOR;

D O I：

10.1016/j.amc.2014.08.083

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We calculate accurate critical parameters for a class of non-hermitian Hamiltonians by means of the diagonalization method. We study three one-dimensional models and two perturbed rigid rotors with PT symmetry. One of the latter models illustrates the necessity of a more general condition for the appearance of real eigenvalues that we also discuss here. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：141 / 151

页数：11

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