%0 Journal Article %T Universal Conductance Distribution in the Quantum Size Regime %A Alex Kamenev %A Yuval Gefen %J Physics %D 1994 %I arXiv %R 10.1209/0295-5075/29/5/011 %X We study the conductance (g) distribution function of an ensemble of isolated conducting rings, with an Aharonov--Bohm flux. This is done in the discrete spectrum limit, i.e., when the inelastic rate, frequency and temperature are all smaller than the mean level spacing. Over a wide range of g the distribution function exhibits universal behavior P(g)\sim g^{-(4+\beta)/3}, where \beta=1 (2) for systems with (without) a time reversal symmetry. The nonuniversal large g tail of this distribution determines the values of high moments. %U http://arxiv.org/abs/cond-mat/9406057v1