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dc.contributor.authorMehrabi, Ahmad-
dc.contributor.authorSaid, Jackson-
dc.identifier.citationMehrabi, A., & Levi Said, J. (2022). Gaussian discriminators between ΛCDM and wCDM cosmologies using expansion data. The European Physical Journal C, 82, 806.en_GB
dc.description.abstractThe Gaussian linear model provides a unique way to obtain the posterior probability distribution as well as the Bayesian evidence analytically. Considering the expansion rate data, the Gaussian linear model can be applied for ΛCDM, wCDM and a non-flatΛCDM. In this paper,we simulate the expansion data with various precision and obtain the Bayesian evidence, then it has been used to discriminate the models. The data uncertainty is in range σ ∈ (0.5, 10)% and two different sampling rates have been considered. Our results indicate that considering σ = 0.5% uncertainty, it is possible to discriminate 2% deviation in equation of state from w = −1. On the other hand, we investigate how precision of the expansion rate data affects discriminating the ΛCDM from a non-flat ΛCDM model. Finally, we perform a parameters inference in both the MCMC and Gaussian linear model, using current available expansion rate data and compare the results.en_GB
dc.subjectGaussian distributionen_GB
dc.subjectGaussian measuresen_GB
dc.subjectDistribution (Probability theory)en_GB
dc.subjectBayesian statistical decision theoryen_GB
dc.subjectDark matter (Astronomy)-
dc.titleGaussian discriminators between ΛCDM and wCDM cosmologies using expansion dataen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.publication.titleThe European Physical Journal Cen_GB
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