2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176125We present Monte Carlo simulations of the spanning-forest model (q \to 0 limit of the ferromagnetic Potts model) in spatial dimensions d=3,4,5. We show that, in contrast to the two-dimensional case, the model has a "ferromagnetic" second-order phase transition at a finite positive value w_c. We present numerical estimates of w_c and of the thermal and magnetic critical exponents. We conjecture that the upper critical dimension is 6.LaTex2e, 4 pages; includes 6 Postscript figures; Version 2 has expanded title as published in PRLStatistical MechanicsHigh Energy Physics - LatticeMathematical Physicstext