Escape from intermittent repellers: Periodic orbit theory for crossover from exponential to algebraic decay

We apply periodic orbit theory to study the asymptotic distribution of esca pe times from an intermittent map. The dynamical zeta function exhibits a b ranch point which is associated with an asymptotic power law escape. By an analytic continuation technique we compute a pair of complex conjugate zero es beyond the branch point, associated with a preasymptotic exponential dec ay. The crossover time from an exponential to a power law is also predicted . The theoretical predictions are confirmed by numerical simulation. Applic ations to conductance fluctuations in quantum dots are discussed. [S1063-65 1X(99)13812-1].