交流诱导超流性
AC-induced superfluidity
摘要：
我们认为，超冷玻色子原子系统在倾斜的光晶格可以成为超流响应共振交流强迫。除此之外，这允许人们在与负有效质量相关的状态下制备玻色-爱因斯坦凝聚体。我们的推理是支持由几个粒子组成的系统的精确数值模拟，并通过基于Floquet-Fock状态的理论方法。
英文摘要：
We argue that a system of ultracold bosonic atoms in a tilted optical lattice can become superfluid in response to resonant AC forcing. Among others, this allows one to prepare a Bose-Einstein condensate in a state associated with a negative effective mass. Our reasoning is backed by both exact numerical simulations for systems consisting of few particles, and by a theoretical approach based on Floquet-Fock states.
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