2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/169021Subject of this letter is the dynamics of a chain obtained performing the continuous limit of a system of links and beads. In particular, the probability distribution of the relative position between two points of the chain averaged over a given interval of time is computed. The physical meaning of the obtained result is investigated in the limiting case of a stiff chain.9 pages, latex + revtex4, no figuresSoft Condensed MatterStatistical Mechanicstext