| Full text | |
| Author(s): |
Neves, J. C. S.
Total Authors: 1
|
| Document type: | Journal article |
| Source: | ASTROPHYSICS AND SPACE SCIENCE; v. 361, n. 9 SEP 2016. |
| Web of Science Citations: | 2 |
| Abstract | |
The ekpyrotic phase (a slow contraction cosmic phase before the current expansion phase) manages to solve the main problems of the standard cosmology by means of a scalar field interpreted as a cosmic fluid in the Friedmann equation. Moreover, this phase generates a nearly scale-invariant spectrum of perturbations in agreement with the latest data. Then, the ekpyrotic mechanism is a serious possibility to the inflationary model. In this work-by using the approach of deforming metrics at linear level-we point out that it is impossible to generate a black hole with spherical symmetry supported by an isotropic fluid in this cosmological scenario. (AU) | |
| FAPESP's process: | 13/03798-3 - Bouncing cosmologies: the ekpyrotic universe |
| Grantee: | Juliano César Silva Neves |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |