Holographic Dark Energy Model is Consistent with Pantheon SN Ia DataSupported by the National Natural Science Foundation of China under Grant Nos. 11603005 and 11775038

• Published in: Communications in theoretical physics Vol. 71; no. 4
• Main Authors: Li, Xin, Zhao, Su-Ping, Tang, Li, Lin, Hai-Nan
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.04.2019
• Subjects: cosmological observations; holographic dark energy; supernova
• ISSN: 0253-6102
• DOI: 10.1088/0253-6102/71/4/421

We constrain three cosmological models, i.e., ΛCDM model, holographic dark energy (HDE) model and R h = ct model by using the recent Pantheon compilation of type Ia supernovae (SN Ia), the direction measurements of Hubble parameter H(z), and the baryon acoustic oscillations (BAO). The spatial curvature is considered in the ΛCDM model and the HDE model. We show that the HDE model in a spatially flat and HDE dominate universe has the same behavior as R h = ct model if the characteristic parameter of the HDE model C0 approaches to infinity. Numerical results show that the ΛCDM model is the best favoured one among the three models. The HDE model is consistent with observational data, the best fitting value of C0 is around 0.8, which implies that the R h = ct model should be modified to be compatible with the present cosmological observational data. Combing all the datasets, we give strict constraint on the Hubble constant, where h 0 = 0.694 ± 0.020 for the ΛCDM model and h 0 = 0.689 ± 0.019 for the HDE model. Our results imply that the tension of Hubble constant between Planck collaborations and Riess et al. has been partially relaxed. The constraint on the spatial curvature is also given, where Ω k 0 = − 0.066 ± 0.165 for the ΛCDM model and Ω k 0 = 0.029 ± 0.067 for the HDE model.