Current reversals in chaotic ratchets: the battle of the attractors

We present the effect of current reversals in inertial chaotic ratchets, without changing a control parameter. This novel situation can occur when we have multiple coexisting attractors in phase space that transport particles in opposite directions. We analyze this effect for the case of two coexisting attractors: a chaotic attractor that generates a positive current and a periodic attractor that generates a negative current.