In the present work a cosmological model -- for a homogeneous,
isotropic and flat Universe -- is analyzed whose constituents are a
non-interacting baryon matter field and interacting dark matter and
dark energy fields. The dark energy and dark matter are coupled through
their effective barotropic indexes, which are considered as functions
of the ratio of their energy densities.
Two asymptotically stable
cases are investigated for the ratio of the dark energy densities
which have their parameters adjusted by considering best fits to Hubble
function data. It is shown that the deceleration parameter, the density
parameters, and the luminosity distance have the correct behavior
which is expected for a viable present scenario of the Universe. |