Quantum soliton-trains of strongly correlated impurities in Bose-Einstein condensates
arxiv(2024)
摘要
Strongly correlated impurities immersed in a Bose-Einstein condensate (BEC)
can form a periodic structure of tightly localized single atoms due to
competing inter- and intra-species interactions, leading to a self-organized
pinned state. In this work, we show numerically that the impurities in the
self-pinned state form a soliton-train, as a consequence of a BEC-mediated
attractive self-interaction and ordering due to the exclusion principle. The
dynamics of the impurities possess similar characteristics to bright
matter-wave solitons as they appear in attractive BECs, however in the few
impurities case, the detailed nature of collisions is determined by their
quantum statistics.
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