2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211474We investigate the background dynamics when dark energy is coupled to dark matter in the universe described by Einstein cosmology and Loop Quantum Cosmology. We introduce a new general form of dark sector coupling, which presents us a more complicated dynamical phase space. Differences in the phase space in obtaining the accelerated scaling attractor in Einstein cosmology and Loop Quantum Cosmology are disclosed.16 pages, 4 figures, references added, accepted by Phys. Rev. DGeneral Relativity and Quantum Cosmologytext