玻色气体
偶极子
模式(计算机接口)
呼吸
量子
物理
凝聚态物理
量子力学
心理学
玻色-爱因斯坦凝聚体
计算机科学
精神科
操作系统
作者
Edmond Orignac,S. De Palo,Luca Salasnich,Roberta Citro
出处
期刊:Physical review
日期:2024-04-16
卷期号:109 (4)
标识
DOI:10.1103/physreva.109.043316
摘要
We investigate the breathing mode and the stability of a quantum droplet in a tightly trapped one-dimensional dipolar gas of bosonic atoms. When the droplet with a flat-top density profile is formed, the breathing-mode frequency scales as the inverse of the number of atoms in the cloud. This is straightforwardly derived within a phenomenological hydrodynamical approach and confirmed using both a variational method based on a generalized Gross-Pitaevskii action functional and the sum-rule approach. We extend our analysis also to the presence of axial confinement showing the effect of the trap on the density profile and therefore on the breathing-mode frequency scaling. Our analysis confirms the stability of the quantum droplet against the particle emission when the flat-top density profile is observed. Our results can be used as a guide to the experimental investigations of collective modes to detect the formation of quantum droplets in quasi-one-dimensional dipolar gases.
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