How the Dark Energy Can Reconcile \textit{Planck} with Local Determination of the Hubble Constant

Abstract

We try to reconcile the tension between the local 2.4\% determination of Hubble constant and its global determination by $\text{Planck}$ CMB data and BAO data through modeling the dark energy variously. We find that the chi-square is significantly reduced by $\Delta {\chi }_{\text{all}}^2=-6.76$ in the redshift-binned dark energy model where the $68\%$ limits of the equation of state of dark energy read $w(0\le z\le 0.1)=-1.958_{-0.508}^{+0.509}$, $w(0.1<z\le 1.5)=-1.006_{-0.082}^{+0.092}$, and here $w(z>1.5)$ is fixed to $-1$.

5 pages, 4 figures

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