Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
| Indexado |
|
||||
| DOI | 10.1140/EPJC/S10052-025-13996-3 | ||||
| Año | 2025 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
A particular generalization of the Chaplygin inflationary model, using the formalism of Hamilton-Jacobi and elliptic functions, results in a more general non-linear Chaplygin-type equation of state (Chaplygin-Jacobi model). We investigate the implementation of this model as a dark energy (DE) fluid to explain the recent acceleration of the universe. Unlike Lambda\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Lambda $$\end{document}CDM and other Chaplygin-like fluids, where the final fate of the universe is an eternal de Sitter (dS) phase, the dynamics of this model allows for the possibility of a decelerating phase in the future, following the current accelerating phase. In other words, a transient acceleration arises, accounting for the recently claimed slowing down phenomenon. This Chaplygin-Jacobi model shows important differences compared to the standard and generalized Chaplygin gas models. Additionally, we perform a Markov Chain Monte Carlo (MCMC) analysis using several datasets, including type Ia supernovae (SNIa), cosmic chronometers (CC), fast radio bursts (FRBs), and Baryon acoustic oscillations (BAO) to examine the observational viability of the model. Our results indicate that, although a transient phase of accelerated expansion is supported by current observations in the context of the Chaplygin-Jacobi model, this model is strongly disfavored in comparison with Lambda\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\Lambda $$\end{document}CDM.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Fortunato, J. A. S. | - |
Univ Fed Espirito Santo - Brasil
Inst Argentino Radioastron - Argentina Universidade Federal do Espírito Santo - Brasil Instituto Argentino de Radioastronomia - Argentina |
| 2 | Hipolito-Ricaldi, W. S. | - |
Univ Fed Espirito Santo - Brasil
Universidade Federal do Espírito Santo - Brasil |
| 3 | Videla, N. | - |
Pontificia Universidad Católica de Valparaíso - Chile
|
| 4 | Villanueva, J. R. | - |
Universidad de Valparaíso - Chile
|
| Fuente |
|---|
| FONDECYT |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| FAPES |
| Fundação de Amparo à Pesquisa e Inovação do Espírito Santo |
| Centro de Física Teórica de Valparaíso |
| Instituto Argentino de Radioastronomía |
| Centro de Fisica Teorica de Valparaiso (CeFiTeV) |
| Agradecimiento |
|---|
| J.A.S.F. thanks FAPES for the fellowship and financial support (045/2024 - P: 2024-M88VK). Also, J.A.S.F. is grateful for the hospitality of the Instituto Argentino de Radioastronomia (IAR), where part of this work was carried out. W.S.H.R. thanks FAPES (PRONEM No 503/2020) for the financial support under which this work was carried out. N. V. acknowledges the financial support of Fondecyt Grant 1220065. J. R. V. is partially supported by Centro de Fisica Teorica de Valparaiso (CeFiTeV). N. V. and J. R. V. thank the CEUNES/UFES for their warm hospitality while some of this work was carried out. |
| J.A.S.F. thanks FAPES for the fellowship and financial support (045/2024 - P: 2024-M88VK). Also, J.A.S.F. is grateful for the hospitality of the Instituto Argentino de Radioastronomia (IAR), where part of this work was carried out. W.S.H.R. thanks FAPES (PRONEM No 503/2020) for the financial support under which this work was carried out. N. V. acknowledges the financial support of Fondecyt Grant 1220065. J. R. V. is partially supported by Centro de F\u00EDsica Te\u00F3rica de Valpara\u00EDso (CeFiTeV). N. V. and J. R. V. thank the CEUNES/UFES for their warm hospitality while some of this work was carried out. |