| Full text | |
| Author(s): |
Pelinson, Ana
[1, 2]
Total Authors: 1
|
| Affiliation: | [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
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | INTERNATIONAL JOURNAL OF MODERN PHYSICS D; v. 18, n. 9, p. 1355-1366, SEP 2009. |
| Web of Science Citations: | 1 |
| Abstract | |
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) | |
| FAPESP's process: | 06/56213-9 - New physics from space: formation and evolution of structures in the universe |
| Grantee: | Claudia Lucia Mendes de Oliveira |
| Support Opportunities: | Research Projects - Thematic Grants |