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We show the presence of both a minimum and clear oscillations in thefrequency dependence of the translocation time of a polymer described as aunidimensional Rouse chain driven by a spatially localized oscillating linearpotential. The observed oscillations of the mean translocation time arise fromthe synchronization between the very mean translocation time and the period ofthe external force. We have checked the robustness of the frequency value forthe minimum translocation time by changing the damping parameter, finding avery simple relationship between this frequency and the correspondenttranslocation time. The translocation time as a function of the polymer lengthhas been also evaluated, finding a precise $L^2$ scaling. Furthermore, the roleplayed by the thermal fluctuations described as a Gaussian uncorrelated noisehas been also investigated, and the analogies with the resonant activationphenomenon are commented.

Translocation time of periodically forced polymer chains