Interacting dilatonic ghost condensate as dark energy model
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866909569764032512 |
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| author | Gonzalez-Espinoza, Manuel Herrera, Ramón |
| author_facet | Gonzalez-Espinoza, Manuel Herrera, Ramón |
| contents | In this paper, we examine the cosmological evolution of a dilatonic ghost condensate field responsible for dark energy, which interacts with dark matter through a source term. We explore three different interaction models to describe the present universe. For each interaction model, we perform a detailed phase-space analysis, obtaining the stability conditions, and identifying the critical points. Furthermore, we compare our interaction models with the most recent Hubble parameter and supernova Ia data as functions of redshift. Additionally, we investigate the conditions for scaling regimes in these models and analyze the successful transition toward an attractor point to characterize the behavior of dark matter. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_05435 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Interacting dilatonic ghost condensate as dark energy model Gonzalez-Espinoza, Manuel Herrera, Ramón General Relativity and Quantum Cosmology In this paper, we examine the cosmological evolution of a dilatonic ghost condensate field responsible for dark energy, which interacts with dark matter through a source term. We explore three different interaction models to describe the present universe. For each interaction model, we perform a detailed phase-space analysis, obtaining the stability conditions, and identifying the critical points. Furthermore, we compare our interaction models with the most recent Hubble parameter and supernova Ia data as functions of redshift. Additionally, we investigate the conditions for scaling regimes in these models and analyze the successful transition toward an attractor point to characterize the behavior of dark matter. |
| title | Interacting dilatonic ghost condensate as dark energy model |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2504.05435 |