Coulomb Blockade Oscillations of Conductance in the Regime of Strong Tunneling

We study the transport through a quantum dot coupled to two leads by single-mode point contacts. The linear conductance is calculated analytically as a function of gate voltage and temperature $T$ in the case when transmission coefficients of the contacts are close to unity. As a function of the gate voltage, the conductance shows Coulomb blockade oscillations. At low temperatures, the off-resonance conductance vanishes as $T^2$, in agreement with the theory of inelastic cotunneling. Near a resonance, the low-energy physics is governed by a multichannel Kondo fixed point.