Comparing dark energy models with current observational data
نویسندگان
چکیده
منابع مشابه
Dark Energy Models toward Observational Tests and Data
A huge amount of good quality data converges towards the picture of a spatially flat universe undergoing the today observed phase of accelerated expansion. This new observational trend is commonly addressed as Precision Cosmology. Despite of the excellent surveys, the nature of dark energy, dominating the matter-energy content of the universe, is still unknown and a lot of different scenarios a...
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We discuss fits of cosmological dark energy models to the available data on high-redshift supernovae and baryon oscillations. We consider a conventional model with Cold Dark Matter and a cosmological constant (ΛCDM), a model invoking super-horizon perturbations (SHDM) and models based on Liouville strings in which dark energy is provided by a rolling dilaton field (Q-cosmology). The two main hi...
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متن کاملTestable dark energy predictions from current data
Michael J. Mortonson,1, 2, 3 Wayne Hu,3, 4 and Dragan Huterer5 Center for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210 Department of Physics, University of Chicago, Chicago, IL 60637 Kavli Institute for Cosmological Physics and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637 Department of Astronomy & Astrophysics, University of Chicago, Chi...
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Nearly all proposed tests for the nature of dark energy measure some combination of four fundamental observables: the Hubble parameter H(z), the distance-redshift relation d(z), the age-redshift relation t(z), or the linear growth factor D1(z). I discuss the sensitivity of these observables to the value and redshift history of the equation of state parameter w, emphasizing where these different...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2018
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2018/07/011