| | |
| | |
Stat |
Members: 3643 Articles: 2'487'895 Articles rated: 2609
29 March 2024 |
|
| | | |
|
Article overview
| |
|
Evolution of gravity-dark energy coupled expanding universe | Ti-Pei Li
; Mei Wu
; | Date: |
26 Mar 2013 | Abstract: | The acceleration of the cosmic expansion revealed by supernova observations
indicates that the present universe is dominated by repulsive dark energy. It
is natural that the coupling between the dark energy and the attractive gravity
has to be taken into account in studying the evolution of our universe. Here we
induce a dynamic equation of universe evolution based on the cosmological
principal, gravity-dark energy coupling, and energy conservation. The solutions
of this dynamic equation provide a specific picture of cosmic evolution, which
is well compatible with current observed evolution histories of both Hubble
parameter H(z) and equation of state parameter w(z) of dark energy. In this
picture, the already observed universe has undergone through three epochs - the
epoch of equilibrium between gravity and dark energy at cosmological redshifts
z>1, the phase transition epoch at z between about 0.5 and 1, and the present
acceleration epoch starting from z~0.5. The expected matter-dominated
deceleration epoch has not been seen yet, which requires future deep
observations to look back upon more early universe. | Source: | arXiv, 1303.6568 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |