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The universal scaling behavior is studied for nonequilibrium transportthrough a quantum dot. To describe the dot we use the standard Andersonimpurity model and use the non-equilibrium non-crossing approximation in thelimit of infinite Coulomb repulsion. After solving de hamiltonian, we calculatethe conductance through the system as a function of temperature $T$ and biasvoltage $V$ in the Kondo and in the mixed valent regime. We obtain a goodscaling function in both regimes. In particular, in the mixed valent regime, wefind excellent agreement with recent experiments and previous theoreticalworks.

Universal scaling in transport out of equilibrium through a single quantum dot using the noncrossing approximation