2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/125715We study the translocation process of a polymer in the absence of external fields for various pore diameters $b$ and membrane thickness $L$. The polymer performs Rouse and reptation dynamics. The mean translocation time $<τ_t>$ that the polymer needs to escape from a cell, and the mean dwell time $<τ_d>$ that the polymer spends in the pore during the translocation process, obey scaling relations in terms of the polymer length $N$, $L$ and $b/R_g$, where $R_g$ is the radius of gyration for the polymer. We explain these relations using simple arguments based on polymer dynamics and the equilibrium properties of polymers.4 pages, 3 figures, to appear in Phys. Rev. LettSoft Condensed MatterStatistical MechanicsBiological PhysicsBiomoleculestext