Status on Bidimensional Dark Energy Parameterizations Using SNe Ia JLA and BAO DatasetsReportar como inadecuado


Status on Bidimensional Dark Energy Parameterizations Using SNe Ia JLA and BAO Datasets


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Mesoamerican Centre for Theoretical Physics, Universidad Autónoma de Chiapas, Carretera Zapata Km. 4, Real del Bosque Terán, Tuxtla Gutiérrez 29040, Chiapas, México





Academic Editor: Emilio Elizalde

Abstract Using current observations of forecast type Ia supernovae SNe Ia Joint Lightcurve Analysis JLA and baryon acoustic oscillations BAO, in this paper we investigate six bidimensional dark energy parameterizations in order to explore which has more constraining power. Our results indicate that for parameterizations that contain z 2 -terms, the tension σ-distance between these datasets seems to be reduced and their behaviour is <1σ compatible with the concordance model ΛCDM. Also, the results obtained by performing their Bayesian evidence show a striking evidence in favour of the ΛCDM model, but only one parameterization can be distinguished by around 1 % from the other models when the combination of datasets are considered. View Full-Text

Keywords: dark energy; observational cosmology; general statistical methods dark energy; observational cosmology; general statistical methods





Autor: Celia Escamilla-Rivera

Fuente: http://mdpi.com/



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