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Emulating dark energy models with known EoS via the CCDM scenario

V\'ictor H. C\'ardenasMiguel Cruz
Jan 2024
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摘要原文
In this work we establish the analog at background level between the Created Cold Dark Matter (CCDM) model and diverse dark energy (DE) models. We find that for a barotropic or linear equation of state (EoS) for the DE, $p=w \rho$, and standard matter sector the corresponding CCDM model is described by the same functional structure of the ratio of particle production, $\Gamma$. For a different EoS the functional form of the $\Gamma$ term is not longer maintained, however, in the case of a polytropic EoS given by the Chaplygin gas the resulting $\Gamma$ term can be written as the one obtained in the barotropic case under certain considerations.
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