Probing two approaches to Unified Dark Dynamics
  Dark matter and dark energy are essential in the description of the late
Universe, since at least the epoch of equality. On the other hand, the
inflation is also necessary and demands a "dark" component, usually associated
to a scalar field that dominated the dynamics and kinematics in the very early
Universe. Yet, these three dark components of standard model of cosmology are
independent from each other, although there are alternative models that pursue
to achieve a triple unification, or at least a double. In the present work we
present an update of two models that we have considered in recent years. The
first is the "dark fluid" model in which dark matter and dark energy are the
same thing, achieving a double unification with specific properties that
exactly emulate the standard model of cosmology, given the dark degeneracy that
exists in the LCDM model. The second model is given by a single F(X) scalar
field Lagrangian, with which one is able to model the whole cosmological
dynamics, from inflation to today, representing a triple unification model. We
highlight the main properties of these models, as well as we test them against
known cosmological probes.
