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Scalar field dark matter and dark energy: a hybrid model for the dark sector
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Diverse cosmological and astrophysical observations strongly hint at the presence of dark matter and dark energy in the Universe. One of the main goals of Cosmology is to explain the nature of these two components. It may well be that both dark matter and dark energy have a common origin. In this paper, we develop a model in which the dark sector arises due to an interplay between two interacting scalar fields. Employing a hybrid inflation potential, we show that the model can be described as a system of a pressureless fluid coupled to a light scalar field. We discuss this setup's cosmological consequences and the observational signatures in the cosmic microwave background radiation and the large-scale structures.
Forward citations
Cited by 2 Pith papers
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Alleviating cosmological tensions with a hybrid dark sector
A one-parameter interacting dark sector model can shift H0 upward and S8 downward when fit to Planck, DESI and supernova data, but the Bayesian evidence over LambdaCDM is inconclusive without SH0ES calibration.
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