2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/174383We investigate the liquid-gas second-order phase transition in liquid $^3He$ using the variational calculations based on the cluster expansion of the energy functional. We also compute the critical point exponents of liquid $^3He$ which are in agreement with experimental data.14 pages, 7 figuresStatistical MechanicsOther Condensed Mattertext