%0 Journal Article
%T What is the Thouless Energy for Ballistic Systems?
%A Alexander Altland
%A Yuval Gefen
%A Gilles Montambaux
%J Physics
%D 1995
%I arXiv
%R 10.1103/PhysRevLett.76.1130
%X The Thouless energy, $\Ec$ characterizes numerous quantities associated with sensitivity to boundary conditions in diffusive mesoscopic conductors. What happens to these quantities if the disorder strength is decreased and a transition to the ballistic regime takes place? In the present analysis we refute the intuitively plausible assumption that $\Ec$ loses its meaning as an inverse diffusion time through the system at hand, and generally disorder independent scales take over. Instead we find that a variety of (thermodynamic) observables are still characterized by the Thouless energy.
%U http://arxiv.org/abs/cond-mat/9511082v1