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Nonlinear Chaplygin Gas Cosmologies

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arxiv 1403.1718 v2 pith:VI7UJQSJ submitted 2014-03-07 astro-ph.CO gr-qc

P. P. Avelino , K. Bolejko , G. F. Lewis This is my paper · ORCID
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keywords chaplygincosmologiesgeneralizednonlinearclusteringlevelmodelsparameter
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We study the nonlinear regime of Unified Dark Energy models, using Generalized Chaplygin Gas cosmologies as a representative example, and introduce a new parameter characterizing the level of small scale clustering in these scenarios. We show that viable Generalized Chaplygin Gas cosmologies, consistent with the most recent observational constraints, may be constructed for any value of the Generalized Chaplygin Gas parameter by considering models with a sufficiently high level of nonlinear clustering.

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Cited by 1 Pith paper

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  1. Clustered unified dark sector cosmology: Background evolution and linear perturbations in light of observations

    astro-ph.CO 2025-02 conditional novelty 6.0 of 10

    CMB secondary anisotropies constrain the clustered fraction in unified Chaplygin gas models to f greater than or similar to 0.99, leaving little room for deviations from LambdaCDM.

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