2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/122083By requiring general-coordinate and conformal invariance of the hydrodynamic equations, we show that the unitary Fermi gas has zero bulk viscosity, zeta=0, in the normal phase. In the superfluid phase, two of the bulks viscosities have to vanish, zeta_1=zeta_2=0, while the third one zeta_3 is allowed to be nonzero.4 pagesOther Condensed MatterSuperconductivityHigh Energy Physics - PhenomenologyNuclear Theorytext