DBI models for the unification of dark matter and dark energy

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We propose a model based on a DBI action for the unification of dark matter and dark energy. This is supported by the results of the study of its background behavior at early and late times, and reinforced by the analysis of the evolution of perturbations. We also perform a Bayesian analysis to set...

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Autor principal: Chimento, L.P
Otros Autores: Lazkoz, R., Sendra, I.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2010
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Chimento, L.P. 
245 1 0 |a DBI models for the unification of dark matter and dark energy 
260 |c 2010 
270 1 0 |m Lazkoz, R.; Fisika Teorikoa, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain; email: ruth.lazkoz@ehu.es 
506 |2 openaire  |e Política editorial 
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520 3 |a We propose a model based on a DBI action for the unification of dark matter and dark energy. This is supported by the results of the study of its background behavior at early and late times, and reinforced by the analysis of the evolution of perturbations. We also perform a Bayesian analysis to set observational constraints on the parameters of the model using type Ia SN, CMB shift and BAO data. Finally, to complete the study we investigate its kinematics aspects, such as the effective equation of state parameter, acceleration parameter and transition redshift. Particularizing those parameters for the best fit one appreciates that an effective phantom is preferred. © 2009 Springer Science+Business Media, LLC.  |l eng 
536 |a Detalles de la financiación: Universidad de Buenos Aires, X224 
536 |a Detalles de la financiación: Consejo Superior de Investigaciones Científicas, 5169 
536 |a Detalles de la financiación: Ministerio de Ciencia e Innovación, MICINN, FIS2007-61800 
536 |a Detalles de la financiación: Euskal Herriko Unibertsitatea, GIU06/37 
536 |a Detalles de la financiación: Acknowledgments We thank A. Díez-Tejedor for comments. L.P.C. is partially supported by the University of Buenos Aires for partial support under project X224, and the Consejo Nacional de Investigaciones Científicas y Técnicas under project 5169. R.L. and I.S. are supported by the Spanish Ministry of Science and Innovation through research grant FIS2007-61800, and by the University of the Basque Country through research grant GIU06/37. 
593 |a Departamento de Física, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina 
593 |a Fisika Teorikoa, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain 
690 1 0 |a COSMOLOGICAL PERTURBATIONS 
690 1 0 |a DARK ENERGY 
690 1 0 |a DARK MATTER 
690 1 0 |a DBI LAGRANGIANS 
690 1 0 |a GEOMETRICAL CONSTRAINTS 
700 1 |a Lazkoz, R. 
700 1 |a Sendra, I. 
773 0 |d 2010  |g v. 42  |h pp. 1189-1209  |k n. 5  |p Gen. Relativ. Gravit.  |x 00017701  |w (AR-BaUEN)CENRE-369  |t General Relativity and Gravitation 
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