arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2403.13635cond-mat.quant-gascond-mat.mes-hall
收藏

硬芯玻色子玻色-爱因斯坦凝聚体中的晶格极化子

Lattice Polaron in a Bose-Einstein Condensate of Hard-Core Bosons

Moroni Santiago-García, Shunashi G Castillo-López, Arturo Camacho-Guardian

AI总结:

本研究采用变分试探波研究二维光学晶格中杂质与硬芯玻色子凝聚体耦合的准粒子性质,发现通过调节浴的填充因子可调控极化子特征,为超冷气体及莫尔材料等量子器件实验提供了重要指导。

摘要:

晶格极化子是杂质与限制在晶格系统中的周围玻色子环境相互作用而产生的准粒子,已成为生成复杂少体态、探测多体现象及解决物理学中长期存在问题的平台。在本研究中,我们采用变分试探波研究杂质耦合到二维光学晶格中硬芯玻色子凝聚气体的准粒子和谱性质。我们的研究结果表明,极化子特征可以通过调节浴的填充因子来调控,揭示了在强相互作用区域中引人入胜的极化子特性。这些结果为超冷气体的晶格极化子实验提供了有价值的见解,并可作为新兴量子器件(如莫尔材料)中新实验的指导,在这些器件中,光学激发可以用硬芯玻色子来描述。

英文摘要:

Lattice polarons, quasiparticles arising from the interaction between an impurity and its surrounding bosonic environment confined to a lattice system, have emerged as a platform for generating complex few-body states, probing many-body phenomena, and addressing long-standing problems in physics. In this study, we employ a variational ansatz to investigate the quasiparticle and spectral properties of an impurity coupled to a condensate gas of hard-core bosons in a two-dimensional optical lattice. Our findings demonstrate that the polaron features can be tuned by adjusting the filling factor of the bath, revealing intriguing polaron characteristics in the strongly interacting regime. These results offer valuable insights for lattice polaron experiments with ultracold gases and can serve as a guide for new experiments in emergent quantum devices, such as moiré materials, where optical excitations can be described in terms of hard-core bosons.

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。

↑