|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'506'133
Articles rated: 2609
27 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Dynamics of scalar perturbations in f(R,T) gravity | | F. G. Alvarenga
; A. de la Cruz-Dombriz
; M. J. S. Houndjo
; M. E. Rodrigues
; D. Sáez-Gómez
; | | Date: |
7 Feb 2013 | | Abstract: | In the context of f(R,T) theories of gravity, we study the evolution of
scalar cosmological perturbations in the metric formalism. According to
restrictions on the background evolution, a specific model within these
theories is assumed in order to guarantee the standard continuity equation.
Using a completely general procedure, we find the complete set of differential
equations for the matter density perturbations. In the case of sub-Hubble
modes, the expression reduces to a second-order equation which is compared with
the standard (quasi-static) equation used in the literature. We show that for
general f(R,T) Lagrangians the quasi-static approximation yields to very
different results from the ones derived in the frame of the Concordance Lambda
CDM model. | | Source: | arXiv, 1302.1866 | | 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 Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER