Persistent currents in a strongly interacting multicomponent Bose gas on a ring

IF 1.3 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Comptes Rendus Physique Pub Date : 2022-11-28 DOI:10.5802/crphys.157
Giovanni Pecci, Gianni Aupetit-Diallo, M. Albert, P. Vignolo, A. Minguzzi
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引用次数: 1

Abstract

We consider a two-component Bose-Bose mixture at strong repulsive interactions in a tightly confining, one-dimensional ring trap and subjected to an artificial gauge field. By employing the Bethe Ansatz exact solution for the many-body wavefunction, we obtain the ground state energy and the persistent currents. For each value of the applied flux, we then determine the symmetry of the state under particles exchange. We find that the ground-state energy and the persistent currents display a reduced periodicity with respect to the case of non-interacting particles, corresponding to reaching states with fractional angular momentum per particle. We relate this effect to the change of symmetry of the ground state under the effect of the artificial gauge field. Our results generalize the ones previously reported for fermionic mixtures with both attractive and repulsive interactions and highlight the role of symmetry in this effect
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环上强相互作用的多组分玻色气体中的持续电流
我们考虑了在严格限制的一维环阱中,在强排斥相互作用下,受到人工规范场作用的双组分玻色-玻色混合物。利用多体波函数的Bethe-Ansatz精确解,我们得到了基态能量和持续电流。对于所施加通量的每个值,我们然后确定粒子交换下状态的对称性。我们发现,相对于非相互作用粒子的情况,基态能量和持续电流显示出降低的周期性,对应于达到每个粒子具有分数角动量的状态。我们将这种效应与在人造规范场作用下基态对称性的变化联系起来。我们的结果推广了先前报道的具有吸引和排斥相互作用的费米子混合物的结果,并强调了对称性在这种效应中的作用
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来源期刊
Comptes Rendus Physique
Comptes Rendus Physique 物理-天文与天体物理
CiteScore
2.80
自引率
0.00%
发文量
13
审稿时长
17.2 weeks
期刊介绍: The Comptes Rendus - Physique are an open acess and peer-reviewed electronic scientific journal publishing original research article. It is one of seven journals published by the Académie des sciences. Its objective is to enable researchers to quickly share their work with the international scientific community. The Comptes Rendus - Physique also publish journal articles, thematic issues and articles on the history of the Académie des sciences and its current scientific activity. From 2020 onwards, the journal''s policy is based on a diamond open access model: no fees are charged to authors to publish or to readers to access articles. Thus, articles are accessible immediately, free of charge and permanently after publication. The Comptes Rendus - Physique (8 issues per year) cover all fields of physics and astrophysics and propose dossiers. Thanks to this formula, readers of physics and astrophysics will find, in each issue, the presentation of a subject in particularly rapid development. The authors are chosen from among the most active researchers in the field and each file is coordinated by a guest editor, ensuring that the most recent and significant results are taken into account. In order to preserve the historical purpose of the Comptes Rendus, these issues also leave room for the usual notes and clarifications. The articles are written mainly in English.
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