Cosmology in Mimetic SU(2) Gauge Theory
  It is well known that the standard scalar field mimetic cosmology provides a
dark matter-like energy density component. Considering $SU(2)$ gauge symmetry,
we study the gauge field extension of the mimetic scenario in spatially flat
and curved FLRW spacetimes. Because of the mimetic constraint, the standard
Yang-Mills term plays the role of the cosmological constant while the mimetic
term provides two different contributions: one is the standard radiation
scaling like $ a^{-4}$ while the other contribution in energy density scales as
$\propto a^{-2}$. Consequently, in the Friedmann equation we have two different
energy densities which scale as $\propto a^{-2}$: one is the mimetic spatial
curvature-like and the other is the standard spatial curvature which can
compete with each other. The degeneracy between these two contributions are
disentangled in this scenario since the mimetic spatial curvature-like term
shows up only at the dynamical level while the standard spatial curvature term
shows up at both dynamical and kinematical levels.
