局域非厄米势散射中的概念性问题
量子物理
2013-05-29 v2 高能物理 - 理论
摘要
我们强调了将准厄米框架应用于分析局域非厄米势(特别是复数方势阱或δ函数)散射时产生的概念性问题。在常规量子力学框架下,这些势通常被视为有效理论,其中由于被忽略的过程导致概率不守恒。然而,若将其视为基本理论,则必须改变希尔伯特空间度规。为了使新定义的概率守恒,即使在远离散射中心的渐近大距离处,它也必须不同于标准概率,其机制在于新度规的非局域性,正如我们在单复数δ函数模型中详细展示的那样。然而,不与非厄米散射势发生物理相互作用的远距离束缚态系统的性质不应受到影响。我们分析了一个支持这一论点的模型哈密顿量。
引用
@article{arxiv.0707.3031,
title = {Conceptual Problems in Scattering from Localized non-Hermitian Potentials},
author = {H. F. Jones},
journal= {arXiv preprint arXiv:0707.3031},
year = {2013}
}
评论
The emphasis has been changed from v1, recognizing that it makes physical sense that the wave functions of scattering states are fundamentally changed in the quasi-Hermitian framework. In contrast, bound states should not be significantly affected by the introduction of a distant non-Hermitian scattering potential