Dark energy constraints after the new Planck data

The Planck Collaboration has recently published maps of the cosmic microwave background radiation with the highest precision. In the standard flat $\ensuremath{\Lambda}$ cold dark matter framework, Planck data show that the Hubble constant ${H}_{0}$ is in tension with that measured by the several direct probes on ${H}_{0}$. In this paper, we perform a global analysis from the current observational data in the general dark energy models and find that resolving this tension requires the dark energy model with its equation of state (EOS) $w\ensuremath{\ne}\ensuremath{-}1$. Firstly, assuming the $w$ to be a constant, the Planck data favor $w<\ensuremath{-}1$ at about $2\ensuremath{\sigma}$ confidence level when combining with the supernovae ``supernova legacy survey'' compilation. Consequently the value derived on ${H}_{0}$, ${H}_{0}=71.3\ifmmode\pm\else\textpm\fi{}2.0\text{ }\text{ }\mathrm{km}\text{ }{\mathrm{s}}^{\ensuremath{-}1}\text{ }{\mathrm{Mpc}}^{\ensuremath{-}1}$ (68% C.L.) is consistent with that from direct ${H}_{0}$ probes. We then investigate the dark energy model with a time-evolving $w$, and obtain the 68% C.L. constraints ${w}_{0}=\ensuremath{-}0.81\ifmmode\pm\else\textpm\fi{}0.19$ and ${w}_{a}=\ensuremath{-}1.9\ifmmode\pm\else\textpm\fi{}1.1$ from the Planck data and the ``supernova legacy survey'' compilation. Current data still slightly favor the quintom dark energy scenario with EOS across the cosmological constant boundary $w\ensuremath{\equiv}\ensuremath{-}1$.