Statistics of conductance peaks for double quantum dots

We study fluctuations of conductance of two connected in series dots in the Coulomb blockade regime. We find the shape of the conductance peaks and th e variance of the interpeak spacing. The latter provides information on the mesoscopic fluctuations of the ground state energy of a single partially o pened quantum dot, which are hard to measure directly. We show conductance of a double dot is unusually sensitive to magnetic field.