https://doi.org/10.1140/epjc/s10052-017-5473-6
Regular Article - Theoretical Physics
Reexploration of interacting holographic dark energy model: cases of interaction term excluding the Hubble parameter
1
Department of Physics, College of Sciences, Northeastern University, Shenyang, 110004, China
2
Center for High Energy Physics, Peking University, Beijing, 100080, China
* e-mail: zhangxin@mail.neu.edu.cn
Received:
23
November
2017
Accepted:
15
December
2017
Published online:
27
December
2017
In this paper, we make a deep analysis for the five typical interacting holographic dark energy models with the interaction terms ,
,
,
, and
, respectively. We obtain observational constraints on these models by using the type Ia supernova data (the Joint Light-Curve Analysis sample), the cosmic microwave background data (Planck 2015 distance priors), the baryon acoustic oscillations data, and the direct measurement of the Hubble constant. We find that the values of
for all the five models are almost equal (around 699), indicating that the current observational data equally favor these IHDE models. In addition, a comparison with the cases of an interaction term involving the Hubble parameter H is also made.
© The Author(s), 2017