Large-scale structure and the Cardassian fluid

Abstract

In this paper, we confront the predictions of the power law cardassian model for the baryon power spectrum with the observations of the SDSS galaxy survey. We show that they fit only for very unusual values of the cold dark matter or baryon density parameters, the Hubble parameter or the spectral index of the initial power spectrum. Moreover, the best-fit Cardassian models turn out to be phantom models. If one wants to recover the usual values for these constants, as quoted by the WMAP team, the power law Cardassian model turns out to be indistinguishable from a LCDM model.

10 pages, 18 figures, Accepted for publication in A&A

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Cited by in corpus (4)

• Constraints on Cardassian universe from Gamma ray bursts
• Latest Observational Constraints on Cardassian Models
• Latest Cosmological Constraints on Cardassian expansion models including the updated Gamma-ray bursts
• Dark Energy, Hyperbolic Cosecant Cardassian and Virial Collapse for Power-style Cardassian