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arXiv 1802.06237cond-mat.quant-gas
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两个重玻色子和两个轻玻色子的四聚体

Tetramers of two heavy and two light bosons

Pascal Naidon

摘要:

本文考虑两个重玻色子和两个轻玻色子在短程力吸引不同质量的玻色子,短程力排斥轻玻色子时的束缚态。这种四体束缚态的存在是这两种力相互竞争的结果。对于给定的吸引力强度,计算出使四个粒子分离所需的排斥力的临界强度。本研究的动机是实验实现的杂质原子浸没在原子玻色-爱因斯坦凝聚体,并旨在确定在哪种制度只有一个玻色子有助于结合两个杂质。

英文摘要:

This article considers the bound states of two heavy and two light bosons, when a short-range force attracts the bosons of different mass, and a short-range force repel the light bosons. The existence of such four-body bound states results from the competition between these two forces. For a given strength of the attraction, the critical strength of the repulsion necessary to unbind the four particles is calculated. This study is motivated by the experimental realisation of impurity atoms immersed in an atomic Bose-Einstein condensate, and aims at determining in which regime only one boson contributes to binding two impurities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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