论文标题
在均匀玻色气体中2D波湍流中各向同性和动态缩放的出现
Emergence of isotropy and dynamic scaling in 2D wave turbulence in a homogeneous Bose gas
论文作者
论文摘要
我们意识到在均匀的2D Bose气体中的湍流级联激发，并在所有相关的时间和长度上探测其从小到大动量的堆积方式，直到系统达到稳定状态，并具有匹配的能量注入和耗散。这种全尺度的观点直接揭示了湍流形成的两个理论上预期的基石 - 各向异性强迫下统计动量空间各向同性的出现，以及在任何能量耗散的能量之前，动量分布的时空尺度的出现。
We realise a turbulent cascade of wave excitations in a homogeneous 2D Bose gas, and probe on all relevant time and length scales how it builds up from small to large momenta, until the system reaches a steady state with matching energy injection and dissipation. This all-scales view directly reveals the two theoretically expected cornerstones of turbulence formation -- the emergence of statistical momentum-space isotropy under anisotropic forcing, and the spatiotemporal scaling of the momentum distribution at times before any energy is dissipated.
