相关实验视频
Updated: Jul 12, 2025
04:35
Preparation of Free-Surface Hyperbolic Water Vortices
Published on: July 28, 2023
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旋在超流体中唤醒模式
1Department of Physics, University of Virginia, PO Box 400714, Charlottesville, VA 22904-4714, United States of America.
概括
超流体-4中的量子化旋环创造了独特的唤醒模式,与兰道频谱不同. 这些模式,类似于凯尔文号船醒来,随着源速度的变化而变化,表明新的基本激发.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子流体 量子流体
背景情况:
- 量子化的环存在于超流体4He中,超出兰道声子-旋光谱.
- 这些旋激发在基本激发光谱中形成了一个单独的分支.
研究的目的:
- 为了研究散装超流体中均移动的源所产生的起伏模式.
- 为了将观察到的觉醒模式与基本刺激的环分支联系起来.
主要方法:
- 环激发干扰的理论分析.
- 将分散规律与重力波和凯尔文船醒来进行比较.
主要成果:
- 环激发预测唤醒模式与凯尔文船唤醒的元素.
- 警觉模式表现出不同的特征 (横向和分离的波面),这些特征随源速度而变化.
- 在低速时,完全发达的横向和分离的波浪出现. 在中等速度下,横向波面会在圆内消失. 在高速时,只能观察到体内的分离波线.
结论:
- 观察到的唤醒模式的变化作为基本激发的旋分支的实验指标.
- 环激发的分散类似于具有红外切断的重力波.
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