An exact solution of the kinetic equation shows that conductivity in a non-Galilean-invariant disordered Fermi liquid depends on electron-electron interactions only through the quasiparticle scattering time, with the hydrodynamic optical response derived for low frequencies.
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Spin conductivity diverges near ferromagnetic quantum criticality from critical fluctuations, interpreted as incipient spin superfluidity.
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Conductivity of a Non-Galilean--Invariant Fermi Liquid: Exact Solution of the Kinetic Equation
An exact solution of the kinetic equation shows that conductivity in a non-Galilean-invariant disordered Fermi liquid depends on electron-electron interactions only through the quasiparticle scattering time, with the hydrodynamic optical response derived for low frequencies.
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Divergent spin conductivity on the verge of ferromagnetic quantum criticality
Spin conductivity diverges near ferromagnetic quantum criticality from critical fluctuations, interpreted as incipient spin superfluidity.