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  • Letter
  • Open Access

Universal density shift coefficients for the thermal conductivity and shear viscosity of a unitary Fermi gas

Xiang Li, J. Huang, and J. E. Thomas*

  • *Contact author: jethoma7@ncsu.edu
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Phys. Rev. Research 6, L042021 – Published 23 October, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L042021

Abstract

We measure universal temperature-independent density shifts for the thermal conductivity κT and shear viscosity η, relative to the high temperature limits, for a normal phase unitary Fermi gas confined in a box potential. We show that a time-dependent kinetic theory model enables extraction of the hydrodynamic transport times τη and τκ from the time-dependent free decay of a spatially periodic density perturbation, yielding the static transport properties and density shifts, corrected for finite relaxation times.

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References (35)

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Phys. Rev. Research 6, L042021– Published 23 October, 2024
  • Received 21 February 2024
  • Revised 11 June 2024
  • Accepted 4 October 2024
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