Abstract
We analyse high-field current fluctuations in degenerate conductorsby mapping the electronic Fermi-liquid correlations at equilibriumto their semi-classical non-equilibrium form. Our resultingBoltzmann description is applicable to diffusive mesoscopic wires.We derive a non-equilibrium connection between thermal fluctuationsof the current and resistive dissipation. In the weak-field limitthis is the canonical fluctuation-dissipation theorem. Away fromequilibrium, the connection enables explicit calculation of theexcess `hot-electron' contribution to the thermal spectrum. Weshow that excess thermal noise is strongly inhibited by Pauliexclusion. This behaviour is generic to the semi-classical metallicregime.
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