  Using renormalized perturbation theory in the Coulomb repulsion, we derive an
analytical expression for the leading term in the temperature dependence of the
conductance through a quantum dot described by the impurity Anderson model, in
terms of the renormalized parameters of the model. Taking these parameters from
the literature, we compare the results with published ones calculated using the
numerical renormalization group obtaining a very good agreement. The approach
is superior to alternative perturbative treatments. We compare in particular to
the results of a simple interpolative perturbation approach.
