2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27909We present an improved Metropolis algorithm for arbitrary hard core systems in any dimensions. In the new updating scheme the conventional Metropolis step of a single particle is replaced by a collective step of a chain of particles. For the two-dimensional hard sphere model we show that this algorithm essentially reduces autocorrelation times in vicinity of the transition point.9 pages, Latex, 3 figures, to appear in Physica AStatistical MechanicsComputational Physicstext