Stability of hyperbolic and matter-dominated bounce cosmologies from F(R, G) modified gravity at late evolution stages
The stability of two different bounce scenarios from F(R, G) modified gravity at later times is studied, namely a hyperbolic cosine bounce model and a matter-dominated one. After describing the main characteristics of F(R, G) modified gravity, the two different bounce scenarios stemming from this th...
| Autores: | , |
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| Tipo de documento: | artigo |
| Estado: | Versión enviada para evaluación y publicación |
| Data de publicação: | 2020 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/236378 |
| Acesso em linha: | http://hdl.handle.net/10261/236378 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Bounce cosmology Gauss-Bonnet gravity Modified gravities |
| Resumo: | The stability of two different bounce scenarios from F(R, G) modified gravity at later times is studied, namely a hyperbolic cosine bounce model and a matter-dominated one. After describing the main characteristics of F(R, G) modified gravity, the two different bounce scenarios stemming from this theory are reconstructed and their stability at late stages is discussed. The stability of the hyperbolic cosine model is proven, while the concrete matter-bounce model here chosen does not seem to accomplish the necessary conditions to be stable at later times. |
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