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.

引用

页数：5

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