Remarks on some vacuum solutions of scalar-tensor cosmological models
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Sociedade Brasileira de Física
2004
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| _version_ | 1876470278298533888 |
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| author | M. E. X. Guimarães |
| author_facet | M. E. X. Guimarães |
| contents | Remarks on some vacuum solutions of scalar-tensor cosmological models M. E. X. Guimarães V. B. Bezerra C. Romero G. Grebot L. P. Colatto Física, Astronomía y Matemáticas We present a class of exact vacuum solutions corresponding to de Sitter and warm inflation models in theframework of scalar-tensor cosmologies. We show that in both cases the field equations reduce to planar dynamicalsystems with constraints. Then, we carry out a qualitative analysis of the models by examining thephase diagrams of the solutions near the equilibrium points. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434231 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.34 |
| format | Artículo científico |
| id | redalyc_46434231 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Remarks on some vacuum solutions of scalar-tensor cosmological models M. E. X. Guimarães Física, Astronomía y Matemáticas Remarks on some vacuum solutions of scalar-tensor cosmological models M. E. X. Guimarães V. B. Bezerra C. Romero G. Grebot L. P. Colatto Física, Astronomía y Matemáticas We present a class of exact vacuum solutions corresponding to de Sitter and warm inflation models in theframework of scalar-tensor cosmologies. We show that in both cases the field equations reduce to planar dynamicalsystems with constraints. Then, we carry out a qualitative analysis of the models by examining thephase diagrams of the solutions near the equilibrium points. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434231 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.34 |
| title | Remarks on some vacuum solutions of scalar-tensor cosmological models |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434231 |