The evolution of the power law k-essence cosmology
  We investigate the evolution of the power law k-essence field in FRWL
spacetime. The autonomous dynamical system and critical points are obtained.
The corresponding cosmological parameters, such as $\Omega _{\phi }$ and
$w_{\phi }$, are calculated at these critical points. We find it is possible to
achieve an equation of state crossing through $-1$ for k-essence field. The
results we obtained indicate that the power law k-essence dark energy model can
be compatible with observations.
