2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220110A method to implement realistic nucleon-nucleon residual interaction (Bonn CD force) based on the Brueckner G-matrix into the Quasiparticle Random Phase Approximation (QRPA) for deformed nuclei is formulated. The two-neutrino double decay for ground state to ground state transitions $^{76}$Ge$ \to ^{76}$Se and $^{150}$Nd $\to ^{150}$Sm is calculated along with the Gamow-Teller strength distributions. The effect of deformation on the observables is studied.18 pages, 6 figures, accepted for publication in in Phys. Rev. CNuclear Theorytext