Behavior of the current in the asymmetric quantum multibaker map

LEONARDO ERMANN; GABRIEL G. CARLO; MARCOS SARACENO

PHYSICAL REVIEW E

AMER PHYSICAL SOC

Año: 2009 vol. 79 p. 56201 - 56209

1539-3755

Recently, a new mechanism leading to purely quantum directed transport in the asymmetric multibaker maphas been presented. Here, we show a comprehensive characterization of the finite asymptotic current behaviorwith respect to the h value, the shape of the initial conditions, and the features of the spectrum. We haveconsidered different degrees of asymmetry in these studies and we have also analyzed the classical andquantum phase-space distributions for short times in order to understand the mechanisms behind the generationof the directed current.