Discriminating interacting dark energy models using Statefinder diagnostic
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Título: | Discriminating interacting dark energy models using Statefinder diagnostic |
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Autor/es: | Carrasco, Raúl | Rincón, Ángel | Saavedra, Joel | Videla, Nelson |
Grupo/s de investigación o GITE: | Astrofísica Relativista |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | ΛCDM | Interacting dark matter and dark energy | Statefinder diagnostic |
Fecha de publicación: | 3-may-2024 |
Editor: | Springer Nature |
Cita bibliográfica: | The European Physical Journal C. 2024, 84:459. https://doi.org/10.1140/epjc/s10052-024-12733-6 |
Resumen: | In the present work, we perform a comparative study of different interacting dark energy (DE) models using the Statefinder diagnostics. In particular, 17 different forms of the energy transfer rate Q between DE and dark matter (DM) were focused on, belonging to the following categories: (i) linear models in energy densities of DE and DM, (ii) non-linear models, (iii) models with a change of direction of energy transfer between DE and DM, (iv) models involving derivatives of the energy densities, (v) parametrized interactions through a function of the coincidence parameter, and finally we also consider (vi) two kinds of models with a self-interaction between DM, without DE. These models have been already studied in the literature and constrained with observational data available at that time. In order to discriminate between them at background level, we use the Statefinder diagnostic, based on the computation and study of the so-called Statefinder parameters r, s in addition to the deceleration parameter q. We plot the evolution trajectories for the several interacting models on the r −q, r −s planes, and we find some distinctive features and departures from CDM and other DE models, as Quintessence, Chaplygin Gas, running vacuum models (RVM) and Galileon. |
Patrocinador/es: | A.R. acknowledge financial support from the Generalitat Valenciana through PROMETEO PROJECT CIPROM/2022/13. A.R. is funded by the Maria Zambrano contract ZAMBRANO 21-25 (Spain). N. Videla and J. Saavedra acknowledge the financial support of Fondecyt Grant 1220065. |
URI: | http://hdl.handle.net/10045/142821 |
ISSN: | 1434-6044 (Print) | 1434-6052 (Online) |
DOI: | 10.1140/epjc/s10052-024-12733-6 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1140/epjc/s10052-024-12733-6 |
Aparece en las colecciones: | INV - Astrofísica Relativista - Artículos de Revistas |
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Archivo | Descripción | Tamaño | Formato | |
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Carrasco_etal_2024_EurPhysJC.pdf | 2,14 MB | Adobe PDF | Abrir Vista previa | |
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