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Chaos, Metastability and Ergodicity in Bose-Hubbard Superfluid Circuits

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 نشر من قبل Doron Cohen
 تاريخ النشر 2017
  مجال البحث فيزياء
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The hallmark of superfluidity is the appearance of metastable flow-states that carry a persistent circulating current. Considering Bose-Hubbard superfluid rings, we clarify the role of quantum chaos in this context. We show that the standard Landau and Bogoliubov superfluidity criteria fail for such low-dimensional circuits. We also discuss the feasibility for a coherent operation of a SQUID-like setup. Finally, we address the manifestation of the strong many-body dynamical localization effect.



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