Quantum resonances crossing and survival amplitude for double-well potentials

IF 3 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Annals of Physics Pub Date : 2025-06-14 DOI:10.1016/j.aop.2025.170122

Andrea Sacchetti

引用次数: 0

Abstract

In the case of crossings of isolated pairs of quantum resonances for double-well potentials it is possible to observe that, under appropriate conditions, the associated metastable states are equally localized on both wells. This property, together with the fact that the imaginary parts of the two resonances coincide, results in the establishment of an interference phenomenon between the two metastable states that characterizes the time dynamics of certain physical observables. In this way, it is possible to lay the theoretical foundations for the design of a quantum device to assess whether or not the model’s parameters assume pre-assigned values.

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双阱势的量子共振交叉和存活振幅

在双阱势的孤立量子共振对交叉的情况下，可以观察到，在适当的条件下，相关的亚稳态在两个阱上都是相同的局域。这一性质，加上两个共振的虚部重合的事实，导致在两个亚稳态之间建立了干涉现象，这种干涉现象表征了某些物理可观测物的时间动力学。这样，就有可能为量子器件的设计奠定理论基础，以评估模型的参数是否具有预设值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annals of Physics 物理-物理：综合

CiteScore

5.30

自引率

3.30%

发文量

211

审稿时长

47 days

期刊介绍： Annals of Physics presents original work in all areas of basic theoretic physics research. Ideas are developed and fully explored, and thorough treatment is given to first principles and ultimate applications. Annals of Physics emphasizes clarity and intelligibility in the articles it publishes, thus making them as accessible as possible. Readers familiar with recent developments in the field are provided with sufficient detail and background to follow the arguments and understand their significance. The Editors of the journal cover all fields of theoretical physics. Articles published in the journal are typically longer than 20 pages.