| Full text | |
| Author(s): |
Costa, F. E. M.
;
Alcaniz, J. S.
;
Jain, Deepak
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 85, n. 10, p. 5-pg., 2012-05-04. |
| Abstract | |
We discuss a new interacting model for the cosmological dark sector in which the attenuated dilution of cold dark matter scales as a(-3)f(a), where f(a) is an arbitrary function of the cosmic scale factor a. From thermodynamic arguments, we show that f(a) is proportional to the entropy source of the particle creation process. In order to investigate the cosmological consequences of this kind of interacting models, we expand f(a) in a power series, and viable cosmological solutions are obtained. Finally, we use current observational data to place constraints on the interacting function f(a). (AU) | |
| FAPESP's process: | 11/13018-0 - Dark energy and F(R) theories: theoretical and observacional aspects |
| Grantee: | Francisco Ernandes Matos Costa |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |