Universal dynamics of a turbulent superfluid Bose gas
Universal dynamics of a turbulent superfluid Bose gas
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湍流超流体玻色气体的通用动力学
DOI：
10.1103/physreva.106.023314
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发表时间：
2021
影响因子：
2.9
通讯作者：
V. Bagnato
中科院分区：
文献类型：
--
作者：
A. D. Garc'ia;L. Madeira;M. A. Moreno;A. R. Fritsch;P. Tavares;P. Castilho;A. Cidrim;G. Roati;V. Bagnato
我们研究的出现普遍标度的时间演化的动量分布的谐波捕获的三维玻色-爱因斯坦凝聚体，参数驱动到一个动荡的状态。我们证明了激发后的平衡动力学是由一个单一的功能，由于附近的非热固定点。观察到的行为将量子湍流态的动力学与几种远离平衡的现象联系起来。我们提出了一个可控的协议，探索在这样的系统的普遍性，获得标度指数，可以作为未来的理论研究的参考。因此，我们的实验结果提供了一个有前途的路线，调查复杂的动力学的量子湍流制度下的一个新的视角。
We study the emergence of universal scaling in the time-evolving momentum distribution of a harmonically trapped three-dimensional Bose-Einstein condensate, parametrically driven to a turbulent state. We demonstrate that the out-of-equilibrium dynamics post excitation is described by a single function due to nearby non-thermal fixed points. The observed behavior connects the dynamics of a quantum turbulent state to several far-from-equilibrium phenomena. We present a controllable protocol to explore universality in such systems, obtaining scaling exponents that can serve as reference for future theoretical investigations. Our experimental results thus offer a promising route to investigate the complex dynamics of the quantum turbulent regime under a novel perspective.
远离平衡的孤立玻色气体中的双向动态缩放
影响因子：
19.6
作者：
Glidden J
通讯作者：
Glidden J