| Texto completo | |
| Autor(es): |
Neves, J. C. S.
Número total de Autores: 1
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| Tipo de documento: | Artigo Científico |
| Fonte: | ASTROPHYSICS AND SPACE SCIENCE; v. 361, n. 9 SEP 2016. |
| Citações Web of Science: | 2 |
| Resumo | |
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) | |
| Processo FAPESP: | 13/03798-3 - Cosmologias com ricochete: o universo ecpirótico |
| Beneficiário: | Juliano César Silva Neves |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |