Theory of Superfluidity in inhomogeneous Bose systems

在具有玻色-爱因斯坦凝聚体的量子液体中实现了超流动性，这意味着没有耗散的宏观流动。另一方面，超固体是具有超流体性质的量子固体。虽然早期的研究已经得出结论，在存在障碍的情况下，超固体是不可能的，但我们在本研究项目中给出了一个反例。我们已经证明了量子固体可以通过约瑟夫森效应在存在障碍物的情况下保持超固体。

Superfluidity, which implies macroscopic flow without dissipation, is realized in quantum liquids with Bose-Einstein condensates. Supersolids, on the other hand, are quantum solids with superfluid property. While earlier studies have concluded that supersolidity is impossible in the presence of an obstacle, we have given a counter-example in the present research project. We have demonstrated that quantum solids can maintain supersolidity in the presence of obstacles through the Josephson effect.