Irreversible Dynamics of Vortex Reconnections in Quantum Fluids.
Irreversible Dynamics of Vortex Reconnections in Quantum Fluids.
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DOI：
10.1103/physrevlett.125.164501
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发表时间：
2020-05
影响因子：
8.6
通讯作者：
A. Villois;D. Proment;G. Krstulovic
中科院分区：
文献类型：
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作者：
A. Villois;D. Proment;G. Krstulovic
我们统计研究涡旋重联量子流体中的发展不同的实现的涡旋霍普夫链接使用Gross-Pitaevskii模型。尽管该模型的时间可逆性，我们报告明确的证据表明，重新连接过程的动态是时间不可逆的，因为重新连接的漩涡往往比他们的方法更快地分离。由于Proment和Krstulovic同时设计的匹配理论[Phys. Rev. Fluids 5，104701（2020）PLFHBR 2469 -990X10.1103/PhysRevFluids.5.104701]，我们定量地将这种不对称性的起源与重连事件后声脉冲的产生联系起来。我们的结果有前景被测试在几个量子流体实验，理论上，可能会揭示新的光在经典和量子湍流流体的能量传递机制。
We statistically study vortex reconnections in quantum fluids by evolving different realizations of vortex Hopf links using the Gross-Pitaevskii model. Despite the time reversibility of the model, we report clear evidence that the dynamics of the reconnection process is time irreversible, as reconnecting vortices tend to separate faster than they approach. Thanks to a matching theory devised concurrently by Proment and Krstulovic [Phys. Rev. Fluids 5, 104701 (2020)PLFHBR2469-990X10.1103/PhysRevFluids.5.104701], we quantitatively relate the origin of this asymmetry to the generation of a sound pulse after the reconnection event. Our results have the prospect of being tested in several quantum fluid experiments and, theoretically, may shed new light on the energy transfer mechanisms in both classical and quantum turbulent fluids.