Temperature Effects in Quantum Dots in the Regime of Chaotic Dynamics

The correlation function of conductances at different magnetic fields and at finite temperature is calculated for a quantum dot in the regime of chaotic dynamics using the supersymmetry technique and assuming that the thermal smearing is the main low temperature effect. Provided the system is open and the leads have the same number of channels, the correlation function turns out, after a proper rescaling of the magnetic field and the temperature, to be universal. The result obtained can be very useful for interpreting current experiments on quantum chaos in quantum dots.