Coupled quintessence with a possible transient accelerating phase
We discuss cosmological consequences of a general model of coupled quintessence in which the phenomenological coupling between the cold dark matter and dark energy is a function of the cosmic scale factor (a). This class of models presents cosmological solutions in which the constitution of the Univ...
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| Format: | Online |
| Language: | Portuguese |
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Universidade Estadual de Campinas
2011
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| Online Access: | https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3281 |
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| _version_ | 1864358300256043008 |
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| author | Costa , Francisco Ernandes Matos |
| author_facet | Costa , Francisco Ernandes Matos |
| author_sort | Costa , Francisco Ernandes Matos |
| collection | Portal de Eventos Científicos da UNICAMP |
| container_reference | Physicae Proceedings; Vol. 1 No. 1 (2010): Proceedings X EJP ; 1-1 |
| description | We discuss cosmological consequences of a general model of coupled quintessence in which the phenomenological coupling between the cold dark matter and dark energy is a function of the cosmic scale factor (a). This class of models presents cosmological solutions in which the constitution of the Universe is dominated currently by an exotic component [X], but late future it come back to be dominated by cold dark matter. This dynamical behavior is completely different from the standard ?CDM evolution, and may alleviate some con?icts in reconciling the idea of the dark energy-dominated universe with observables in String/M-theory. Finally, we investigate some observational features of this model and discuss some constraints on its parameters from current SNe Ia, BAO, CMB and H0 data. |
| first_indexed | 2025-10-08T13:49:23Z |
| format | Online |
| id | ojs-article-3281 |
| institution | Universidade Estadual de Campinas |
| issn | 2236-7535 |
| language | por |
| last_indexed | 2025-10-08T13:49:23Z |
| publishDate | 2011 |
| publisher | Universidade Estadual de Campinas |
| record_format | ojs |
| spelling | ojs-article-32812020-05-15T15:13:20Z Coupled quintessence with a possible transient accelerating phase Costa , Francisco Ernandes Matos Dark matter Dark energy We discuss cosmological consequences of a general model of coupled quintessence in which the phenomenological coupling between the cold dark matter and dark energy is a function of the cosmic scale factor (a). This class of models presents cosmological solutions in which the constitution of the Universe is dominated currently by an exotic component [X], but late future it come back to be dominated by cold dark matter. This dynamical behavior is completely different from the standard ?CDM evolution, and may alleviate some con?icts in reconciling the idea of the dark energy-dominated universe with observables in String/M-theory. Finally, we investigate some observational features of this model and discuss some constraints on its parameters from current SNe Ia, BAO, CMB and H0 data. Universidade Estadual de Campinas 2011-04-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3281 Physicae Proceedings; Vol. 1 No. 1 (2010): Proceedings X EJP ; 1-1 Physicae Proceedings; v. 1 n. 1 (2010): Proceedings X EJP ; 1-1 2236-7535 por https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3281/3208 Copyright (c) 2010 Physicae |
| spellingShingle | Costa , Francisco Ernandes Matos Dark matter Dark energy Coupled quintessence with a possible transient accelerating phase |
| title | Coupled quintessence with a possible transient accelerating phase |
| title_full | Coupled quintessence with a possible transient accelerating phase |
| title_fullStr | Coupled quintessence with a possible transient accelerating phase |
| title_full_unstemmed | Coupled quintessence with a possible transient accelerating phase |
| title_short | Coupled quintessence with a possible transient accelerating phase |
| title_sort | coupled quintessence with a possible transient accelerating phase |
| topic | Dark matter Dark energy |
| url | https://econtents.sbu.unicamp.br/eventos/index.php/phyproceedings/article/view/3281 |
| work_keys_str_mv | AT costafranciscoernandesmatos coupledquintessencewithapossibletransientacceleratingphase |
