| Texto completo | |
| Autor(es): |
Pelinson, Ana
[1, 2]
Número total de Autores: 1
|
| Afiliação do(s) autor(es): | [1] Univ Barcelona, Inst Ciencies Cosmos, E-08028 Barcelona, Catalonia - Spain
[2] Univ Barcelona, Dept ECM, High Energy Phys Grp, E-08028 Barcelona, Catalonia - Spain
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL JOURNAL OF MODERN PHYSICS D; v. 18, n. 9, p. 1355-1366, SEP 2009. |
| Citações Web of Science: | 1 |
| Resumo | |
The Starobinsky model is a natural inflationary scenario in which inflation arises due to quantum effects of the massless matter fields. A modified version of the Starobinsky (MSt) model takes the masses of matter fields and the cosmological constant, A, into account. The equations of motion become much more complicated; however, approximate analytic and numeric solutions are possible. In the MSt model, inflation starts due to the supersymmetric (SUSY) particle content of the underlying theory, and the transition to the radiation-dominated epoch occurs due to the relatively heavy s-particles decoupling. For Lambda = 0 the inflationary solution is stable until the last stage, just before decoupling. In the present paper we generalize this result for Lambda not equal 0, since. should be nonvanishing at the SUSY scale. We also take into account the radiative corrections to Lambda. The main result is that the inflationary solution of the MSt model remains robust and stable. (AU) | |
| Processo FAPESP: | 03/04516-0 - Confrontando as previsões da teoria de inflação baseado nos efeitos de vácuo com as observações |
| Beneficiário: | Ana das Mercês Pelinson |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 06/56213-9 - Nova física no espaço: formação e evolução de estruturas no universo |
| Beneficiário: | Claudia Lucia Mendes de Oliveira |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |