发表机构
University of Electro-Communications; Okinawa Institute of Science and Technology Graduate University（电波大学; 冲绳科学技术大学院大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文在平均场理论框架下，证明了自旋-1锂-7和钠-23玻色-爱因斯坦凝聚体二元混合物中可存在混合气泡态，并发现亚稳均匀混合态在局部扰动下可转变为此态。
AI 中文摘要
在平均场理论中，均匀系统中双组分玻色-爱因斯坦凝聚体（BEC）的基态要么是均匀混合的，要么是完全分离的。超越平均场效应引入了一个额外的相，即混合气泡态，在该态中，两个组分在分离的域之一内保持混合。这里我们表明，即使在平均场框架内，混合气泡态也可以出现在自旋-1 ${}^{7}{\rm{Li}}$ 和 ${}^{23}{\rm{Na}}$ BEC 的二元混合物中。我们进一步证明了亚稳均匀混合态的存在，该态在局部扰动触发下发生向混合气泡态的转变。
英文摘要
In mean-field theory, the ground state of a two-component Bose-Einstein condensate (BEC) in a uniform system is either uniformly mixed or totally separated. Beyond-mean-field effects introduce an additional phase, the mixed-bubble state, in which the two components remain mixed within one of the separated domains. Here we show that a mixed-bubble state can emerge in a binary mixture of spin-1 ${}^{7}{\rm{Li}}$ and ${}^{23}{\rm{Na}}$ BECs even within the mean-field framework. We further demonstrate the existence of a metastable uniformly-mixed state, which undergoes a transition to the mixed-bubble state triggered by a local perturbation.
Comments6 pages, 4 figures, 1 supplemental pdf file
