2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/218582Thermodynamics of the unitary Fermi gas at finite temperature is investigated from the perspective of the expansion over epsilon=4-d with d being the dimensionality of space. We show that the thermodynamics is dominated by bosonic excitations in the low temperature region T<<Tc. Analytic formulas for the thermodynamic functions as functions of the temperature are derived to the lowest order in epsilon in this region. In the high temperature region where T Tc, bosonic and fermionic quasiparticles are excited. We determine the critical temperature Tc of the superfluid phase transition and the thermodynamic functions around Tc to the leading and next-to-leading orders in epsilon.13 pages, 7 figures, revtex4; version to appear in Phys. Rev. AOther Condensed MatterHigh Energy Physics - PhenomenologyNuclear Theorytext