DISORDER IN BALLISTIC SYSTEMS - A NUMERICAL-ANALYSIS

We present a numerical analysis of the single particle energy spectra of ballistic condensed matter systems and compare with recent theoreti cal results. We show that the presence even of weak disorder induces f ull chaoticity on time scales larger than the elastic disorder scatter ing time. To disentangle the effect of boundary, respectively disorder scattering on the spectral statistics, different types of correlation functions are introduced and discussed.