Hydrodynamic Relaxation in a Strongly Interacting Fermi Gas

被引：8
|
作者：
Wang, Xin [1 ]
Li, Xiang [1 ]
Arakelyan, Ilya [1 ]
Thomas, J. E. [1 ]
机构：
[1] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 09期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevLett.128.090402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We measure the free decay of a spatially periodic density profile in a normal fluid strongly interacting Fermi gas, which is confined in a box potential. This spatial profile is initially created in thermal equilibrium by a perturbing potential. After the perturbation is abruptly extinguished, the dominant spatial Fourier component exhibits an exponentially decaying (thermally diffusive) mode and a decaying oscillatory (first sound) mode, enabling independent measurement of the thermal conductivity and the shear viscosity directly from the time-dependent evolution.
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页数：5
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