玻色原子与Pöschl-Teller相互作用的玻色-爱因斯坦凝聚的集体激发

IF 2.6 3区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Physics Letters A Pub Date : 2025-09-24 DOI:10.1016/j.physleta.2025.131006

Avra Banerjee, Arnab Bhowmik, Dwipesh Majumder

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引用次数: 0

摘要

我们研究了具有有限范围相互作用的凝聚相中玻色原子的集体激发，使用Pöschl-Teller （PT）势模型来明确解释有限相互作用范围。利用Bogoliubov理论推导了激发谱，并考察了其与相互作用参数的依赖关系。我们的分析表明，旋转极小值的出现和消失直接受到PT相互作用范围的影响。此外，我们计算了静态结构因子，发现低动量状态下的相关性增强，其性质由PT势的特征控制。我们详细地研究了声速和可压缩性的相互依赖关系。

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Collective excitation of Bose-Einstein condensate of Bose atoms with Pöschl-Teller interaction

We investigate the collective excitations of Bose atoms in the condensate phase with finite-range interactions, modeled using the Pöschl-Teller (PT) potential to explicitly account for the finite interaction range. Utilizing Bogoliubov theory, we derive the excitation spectrum and examine its dependence on interaction parameters. Our analysis reveals that the emergence and disappearance of the roton minima are directly influenced by the range of the PT interaction. Furthermore, we calculate the static structure factor and find enhanced correlations in the low-momentum regime, with their nature controlled by the characteristics of the PT potential. We have examined the interaction dependence of sound velocity and compressibility in detail.

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来源期刊

Physics Letters A 物理-物理：综合

CiteScore

5.10

自引率

3.80%

发文量

493

审稿时长

30 days

期刊介绍： Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.