延迟湍流玻色-爱因斯坦凝聚体热化的色散瓶颈
Dispersive bottleneck delaying thermalization of turbulent Bose-Einstein Condensates
摘要：
在截断的Gross-Pitaevskii动力学中得到了一种新的涉及直接能量级联的热化机制。在系统达到平衡之前，会观察到小尺度上部分热化的长瞬态。旋涡被发现消失的前奏，最终热化。一个瓶颈，产生自发有效的自截断和延迟热化的特点是大的色散效应时，截断波数。数量级估计表明，自截断发生在湍流玻色-爱因斯坦凝聚体。这种效应也应该存在于经典流体力学和湍流模型中。
英文摘要：
A new mechanism of thermalization involving a direct energy cascade is obtained in the truncated Gross-Pitaevskii dynamics. A long transient with partial thermalization at small-scales is observed before the system reaches equilibrium. Vortices are found to disappear as a prelude to final thermalization. A bottleneck that produces spontaneous effective self-truncation and delays thermalization is characterized when large dispersive effects are present at the truncation wavenumber. Order of magnitude estimates indicate that self-truncation takes place in turbulent Bose-Einstein condensates. This effect should also be present in classical hydrodynamics and models of turbulence.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
