时变非交换背景下的量子谐振子

IF 1.3 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Manjari Dutta, Shreemoyee Ganguly, Sunandan Gangopadhyay
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引用次数: 0

摘要

这项工作探讨了一个非交换谐振子在随时间变化的背景中的行为,Dey 和 Fring(Phys. Rev. D 90, 084005, 2014)曾对此进行过研究。具体来说,我们利用比斯瓦斯等人(Phys. Rev. A 102, 022231, 2020)最近提出的标准博普移位关系的广义形式,研究了以交换变量表示的系统。我们利用与埃尔马科夫-平尼方程(一个非线性微分方程)相关的刘易斯不变式方法求解了这个随时间变化的系统,并得到了特征函数的解析形式。然后,我们得到了 Ermakov-Pinney 方程的精确解析解集。有了这些解,我们就可以继续分析计算能量期望值的动态,并探索与特定量子数选择相关的 Ermakov-Pinney 方程各种解集的图形表示。最后,我们确定了交换和非交换情况下算子间不确定性相等关系的广义形式。我们的研究与 Dey 和 Fring(Phys. Rev. D 90, 084005, 2014)的发现一致,特别是在坐标映射关系还原为标准博普移位关系的特定极限下。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Quantum Harmonic Oscillator in a Time Dependent Noncommutative Background

Quantum Harmonic Oscillator in a Time Dependent Noncommutative Background

This work explores the behaviour of a noncommutative harmonic oscillator in a time-dependent background, as previously investigated in Dey and Fring (Phys. Rev. D 90, 084005, 2014). Specifically, we examine the system when expressed in terms of commutative variables, utilizing a generalized form of the standard Bopp-shift relations recently introduced in Biswas et al. (Phys. Rev. A 102, 022231, 2020). We solved the time dependent system and obtained the analytical form of the eigenfunction using the method of Lewis invariants, which is associated with the Ermakov-Pinney equation, a non-linear differential equation. We then obtain exact analytical solution set for the Ermakov-Pinney equation. With these solutions in place, we move on to compute the dynamics of the energy expectation value analytically and explore their graphical representations for various solution sets of the Ermakov-Pinney equation, associated with a particular choice of quantum number. Finally, we determined the generalized form of the uncertainty equality relations among the operators for both commutative and noncommutative cases. Expectedly, our study is consistent with the findings in Dey and Fring (Phys. Rev. D 90, 084005, 2014), specifically in a particular limit where the coordinate mapping relations reduce to the standard Bopp-shift relations.

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来源期刊
CiteScore
2.50
自引率
21.40%
发文量
258
审稿时长
3.3 months
期刊介绍: International Journal of Theoretical Physics publishes original research and reviews in theoretical physics and neighboring fields. Dedicated to the unification of the latest physics research, this journal seeks to map the direction of future research by original work in traditional physics like general relativity, quantum theory with relativistic quantum field theory,as used in particle physics, and by fresh inquiry into quantum measurement theory, and other similarly fundamental areas, e.g. quantum geometry and quantum logic, etc.
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