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 cold dark matter framework, Planck data show that the Hubble constant H₀ is in tension with that measured by the several direct probes on H₀. 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-1. Firstly, assuming the w to be a constant, the Planck data favor w<-1 at about 2 confidence level when combining with the supernovae ``supernova legacy survey'' compilation. Consequently the value derived on H₀, H₀=71. 32. 0 km s^-1 Mpc^-1 (68% C. L. ) is consistent with that from direct H₀ probes. We then investigate the dark energy model with a time-evolving w, and obtain the 68% C. L. constraints w₀=-0. 810. 19 and w₀=-1. 91. 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-1.