Slowly rocking symmetric, spatially periodic Hamiltonians: The role of escape and the emergence of giant transient directed transportD. Hennig, L. Schimansky-Geier and P. HänggiEur. Phys. J. B, 62 4 (2008) 493-503DOI: https://doi.org/10.1140/epjb/e2008-00196-7