We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Comparing entropy inspired holographic dark energy models through statefinder hierarchy and growth rate of perturbations.
- Authors
Kumar, Mukesh; Dubey, Vipin Chandra; Sharma, Umesh Kumar
- Abstract
In this paper, we have investigated some recently proposed entropy-based versions of various HDE models, namely, the TADE, THDE, RHDE and SMHDE for different values of model parameter δ with the help of two diagnostic tools, in the context of a flat Friedmann–Lema î tre–Robertson–Walker Universe. The statefinder hierarchy is the first diagnostic tool, by which we examine these DE models. The evolution of statefinder hierarchy parameters S 3 1 , S 3 2 S 4 1 , S 4 2 has been investigated by plotting against redshift z. The evolutionary trajectories of all the DE models approach the Λ CDM model, except the TADE model for some values of δ at late time, are well discriminated with the Λ CDM model at early time. To get more clear discrimination among the DE models at late time, we have used the CND, i.e. { S 3 (1) , } { S 4 (1) , } , where indicates the fractional growth parameter. The evolutionary trajectories of { S 3 (1) , } and { S 4 (1) , } show different characteristics and the departure from Λ CDM could be well evaluated.
- Subjects
DARK energy; ENTROPY; REDSHIFT
- Publication
International Journal of Geometric Methods in Modern Physics, 2021, Vol 18, Issue 12, p1
- ISSN
0219-8878
- Publication type
Article
- DOI
10.1142/S0219887821501954