Higher cumulants of voltage fluctuations in current-biased diffusive contacts

The third and fourth cumulants of voltage in a current-biased diffusive metal contact of resistance $R$ are calculated for arbitrary temperatures and voltages using the semiclassical cascade approach. The third cumulant equals $e^2{R}^{3}I\mathrm{/}3$ at high temperatures and $4e^2{R}^{3}I\mathrm{/}15$ at low temperatures, whereas the fourth cumulant equals $2e^2{R}^{3}T\mathrm{/}3$ at high temperatures and $(34\mathrm{/}105)e^3{R}^{4}I$ at low temperatures.