2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49534Flow equations for an O(N)-symmetric effective potential are discussed and solved for the finite temperature case. The model is investigated at the critical point and critical exponents for various N are calculated.LaTeX file, 6 pages, 4 ps figures included with psfig.sty and sprocl.sty. Proceeding of the "XVII Autumn School: QCD - perturbative or nonperturbative?", Lisbon, Portugal, Sept.-Oct. 1999High Energy Physics - Phenomenologytext