Accelerated expansion of the Universe in the Presence of Dark Matter
  Pressure
  Expansion dynamics of the Universe is one of the important subjects in modern
cosmology. The dark energy equation of state determines this dynamics so that
the Universe is in an accelerating phase. However, the dark matter can also
affect the accelerated expansion of the Universe through its equation of state.
In the present work, we explore the expansion dynamics of the Universe in the
presence of dark matter pressure. In this regard, applying the dark matter
equation of state from the observational data related to the rotational curves
of galaxies, we calculate the evolution of dark matter density. Moreover, the
Hubble parameter, history of scale factor, luminosity distance, and
deceleration parameter are studied while the dark matter pressure is taken into
account. Our results verify that the dark matter pressure leads to the higher
values of the Hubble parameter at each redshift and the expansion of the
Universe grows due to the DM pressure.
