论文标题
旋转的玻璃纤维冷凝水中的湍流
Turbulence in rotating Bose-Einstein condensates
论文作者
论文摘要
由于Feynman首先提出了量子湍流的概念，后来在超流体氦气和Bose-Einstein冷凝物的实验中意识到，因此已经非常重点是寻找将量子湍流与经典对象区分开的特征。在这里，我们表明旋转冷凝物中的量子湍流与经典情况根本不同。旋转量子湍流在量化涡流中的动能自组织会发展出负温度状态，但它也显示出各向异性耗散机制和不同的非kolmogorovian，在小尺度上缩放能量。这种缩放与葡萄信的湍流兼容，并且在最近对具有多物种涡旋的冷凝物的模拟中也发现了这种缩放。尺度的基本解释是根据涡旋位置的混乱来提出的。
Since the idea of quantum turbulence was first proposed by Feynman, and later realized in experiments of superfluid helium and Bose-Einstein condensates, much emphasis has been put in finding signatures that distinguish quantum turbulence from its classical counterpart. Here we show that quantum turbulence in rotating condensates is fundamentally different from the classical case. While rotating quantum turbulence develops a negative temperature state with self-organization of the kinetic energy in quantized vortices, it also displays an anisotropic dissipation mechanism and a different, non-Kolmogorovian, scaling of the energy at small scales. This scaling is compatible with Vinen turbulence and is also found in recent simulations of condensates with multicharged vortices. An elementary explanation for the scaling is presented in terms of disorder in the vortices positions.
