Abstract

In the statistical framework of model-independent Gaussian processes (GP), we search for the evidence of dynamical dark energy (DDE) using the “Joint Light-curve Analysis” (JLA) Type Ia supernovae (SNe Ia) sample, the 30 latest cosmic chronometer data points (H(z)), Planck’s shift parameter from cosmic microwave background (CMB) anisotropies, the 156 latest HII galaxy measurements and 79 calibrated gamma-ray bursts (GRBs). We find that the joint constraint from JLA + H(z) + CMB + HII + GRB supports the global measurement of \[H_0\] by Planck collaboration very much in the low redshift range \[z\in [0, 0.76]\] at the \[2\sigma \] confidence level (C.L.), gives a cosmological constant crossing (quintom-like) equation of state (EoS) of DE at the \[2\sigma \] C.L. and implies that the evolution of the late-time Universe may be actually dominated by the DDE.

Details

Title
Searching for the evidence of dynamical dark energy
Author
Deng, Wang 1 ; Zhang, Wei 2 ; Xin-He, Meng 2 

 Department of Astronomy, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China; Theoretical Physics Division, Chern Institute of Mathematics, Nankai University, Tianjin, China 
 Department of Physics, Nankai University, Tianjin, China 
Pages
1-10
Publication year
2019
Publication date
Mar 2019
Publisher
Springer Nature B.V.
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2188859389
Copyright
The European Physical Journal C is a copyright of Springer, (2019). All Rights Reserved., © 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.