Emergence and decay of turbulence in stirred atomic Bose-Einstein condensates.
Emergence and decay of turbulence in stirred atomic Bose-Einstein condensates.
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搅拌原子玻色-爱因斯坦凝聚中湍流的出现和衰变。
DOI：
10.1103/physrevlett.95.145301
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发表时间：
2005
影响因子：
8.6
通讯作者：
C. S. Adams
中科院分区：
文献类型：
--
作者：
Nick G. Parker;C. S. Adams
我们用Kolmogorov能谱证明了原子玻色-爱因斯坦凝聚体在接近四极失稳频率旋转时的“微弱”椭圆形变导致了湍流。湍流状态是由能量转移到由四极不稳定性抛出的凝聚碎片而产生的。这种能量传递是通过打破凝聚体的双重旋转对称性来驱动的。随后，涡旋与声音的相互作用抑制了导致涡旋晶格结晶的湍流状态。
We show that "weak" elliptical deformation of an atomic Bose-Einstein condensate rotating at close to the quadrupole instability frequency leads to turbulence with a Kolmogorov energy spectrum. The turbulent state is produced by energy transfer to condensate fragments that are ejected by the quadrupole instability. This energy transfer is driven by breaking the twofold rotational symmetry of the condensate. Subsequently, vortex-sound interactions damp the turbulent state leading to the crystallization of a vortex lattice.