Cosmic implications of generalized HDE model in FRW universe
In this study, we investigate a generalized holographic dark energy model within the framework of dynamical Chern–Simons modified gravity theory. By incorporating the Hubble parameter H and its higher order derivatives, we explore the equation of state and its implications for the expansion of the k...
Saved in:
| Published in: | New astronomy Vol. 104; p. 102084 |
|---|---|
| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
01-11-2023
|
| Subjects: | |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | In this study, we investigate a generalized holographic dark energy model within the framework of dynamical Chern–Simons modified gravity theory. By incorporating the Hubble parameter H and its higher order derivatives, we explore the equation of state and its implications for the expansion of the known universe using the Friedmann–Robertson–Walker metric. Our analysis reveals three distinct cases arising from the solutions to the Chern–Simons field equations, which depend on the chosen parameters. In the first two cases, we observe confirmation of the accelerated expansion of the universe, consistent with the predicted range of −1<ω<0. However, in the third case, the depicted behavior exhibits a phantom-like nature. It is important to note that irrespective of the case, the generalized holographic dark energy model supports the transition from deceleration to acceleration, aligning well with observational data. Furthermore, our findings establish that the generalized holographic dark energy model endorses the universe’s accelerated expansion within the framework of dynamical Chern–Simons modified gravity theory.
•In the context of dynamical Chern-Simons modified gravity theory, we consider a generalized holographic dark energy model in this study that combines the Hubble parameter H and its higher order derivatives.•We probed the equation of state to look into the known universe expansion using the FRW metric.•There arises three cases at the solution level of Chern Simons field equations for different choices of parameters.•The accelerated expansion of the universe was confirmed in the first two cases, as predicted −1<ω<0 while in the third case depictions showed a phantom-like behavior.•It is worth noting that in all three cases, the generalized holographic dark energy model supported the transition from deceleration to acceleration that was consistent with the observational data. Also, it is ascertained that a generalized HDE model endorsed the universe’s accelerated expansion in the framework of dynamical Chern Simons modified gravity theory. |
|---|---|
| ISSN: | 1384-1076 1384-1092 |
| DOI: | 10.1016/j.newast.2023.102084 |