Multifractal fluctuations in the survival probability of an open quantum system

We predict a multifractal behavior of transport in the deep quantum regime for the opened delta-kicked rotor model. Our analysis focuses on intermediate and large scale correlations in the transport signal and generalizes previously found parametric mono-fractal fluctuations in the quantum survival probability on small scales. (c) 2006 Elsevier B.V. All rights reserved.