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Title: Viscous Properties of a Degenerate One-Dimensional Fermi Gas

Abstract

In this paper, we study the viscous properties of a system of weakly interacting spin-1/2 fermions in one dimension. Accounting for the effect of interactions on the quasiparticle energy spectrum, we obtain the bulk viscosity of this system at low temperatures. Our result is valid for frequencies that are small compared with the rate of fermion backscattering. For frequencies larger than this exponentially small rate, the excitations of the system become decoupled from the center of mass motion, and the fluid is described by two-fluid hydrodynamics. We calculate the three transport coefficients required to describe viscous dissipation in this regime.

Authors:
ORCiD logo [1];  [2]
  1. Univ. of Maryland, College Park, MD (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1656853
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 125; Journal Issue: 7; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

DeGottardi, Wade, and Matveev, K.  A. Viscous Properties of a Degenerate One-Dimensional Fermi Gas. United States: N. p., 2020. Web. doi:10.1103/physrevlett.125.076601.
DeGottardi, Wade, & Matveev, K.  A. Viscous Properties of a Degenerate One-Dimensional Fermi Gas. United States. https://doi.org/10.1103/physrevlett.125.076601
DeGottardi, Wade, and Matveev, K.  A. Tue . "Viscous Properties of a Degenerate One-Dimensional Fermi Gas". United States. https://doi.org/10.1103/physrevlett.125.076601. https://www.osti.gov/servlets/purl/1656853.
@article{osti_1656853,
title = {Viscous Properties of a Degenerate One-Dimensional Fermi Gas},
author = {DeGottardi, Wade and Matveev, K.  A.},
abstractNote = {In this paper, we study the viscous properties of a system of weakly interacting spin-1/2 fermions in one dimension. Accounting for the effect of interactions on the quasiparticle energy spectrum, we obtain the bulk viscosity of this system at low temperatures. Our result is valid for frequencies that are small compared with the rate of fermion backscattering. For frequencies larger than this exponentially small rate, the excitations of the system become decoupled from the center of mass motion, and the fluid is described by two-fluid hydrodynamics. We calculate the three transport coefficients required to describe viscous dissipation in this regime.},
doi = {10.1103/physrevlett.125.076601},
journal = {Physical Review Letters},
number = 7,
volume = 125,
place = {United States},
year = {Tue Aug 11 00:00:00 EDT 2020},
month = {Tue Aug 11 00:00:00 EDT 2020}
}

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