High-temperature expansion of the viscosity in interacting quantum gases
Johannes Hofmann
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.
Topics & Concepts
Formalism (music)Virial expansionFermi gasPhysicsCauchy stress tensorVirial theoremQuantumFermi Gamma-ray Space TelescopeViscosityVirial coefficientStatistical physicsQuantum mechanicsCondensed matter physicsElectronArtGalaxyMusicalVisual artsCold Atom Physics and Bose-Einstein CondensatesQuantum, superfluid, helium dynamicsPhysics of Superconductivity and Magnetism