arXiv:1905.05133 · Physical Review A

High-temperature expansion of the viscosity in interacting quantum gases

Johannes Hofmann

Published Jan 16, 2020• 42 citations

Abstract

The frequency-dependent shear and bulk viscosity spectral functions of an interacting Fermi gas at high temperature are computed using a systematic virial expansion of the stress tensor correlation function. The field-theoretical methods employed have interesting relations with many-body techniques, such as the Keldysh formalism and can be compared with numerical calculations.

DOI: 10.1103/physreva.101.013620

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