Remarks on some vacuum solutions of scalar-tensor cosmological models
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| Автор: | |
|---|---|
| Дата публікації: | 2004 |
| Інші автори: | , , , |
| Формат: | Article |
| Мова: | eng |
| Джерело: | Repositório Institucional da UnB |
| Download full: | http://repositorio.unb.br/handle/10482/12813 http://dx.doi.org/10.1590/S0103-97332004000300032 |
Резюме: | We present a class of exact vacuum solutions corresponding to de Sitter and warm inflation models in the framework of scalar-tensor cosmologies. We show that in both cases the field equations reduce to planar dynamical systems with constraints. Then, we carry out a qualitative analysis of the models by examining the phase diagrams of the solutions near the equilibrium points. |