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A model with interaction of dark components and recent observational data
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abstract
In the proposed model with interaction between dark energy and dark matter, we consider cosmological scenarios with different equations of state ($w_d$) for dark energy. For both constant and variable equation of state, we analyze solutions for dark energy and dark matter in seven variants of the model. We investigate exact analytic solutions for $w_d={}$ constant equation of state, and several variants of the model for variable $w_d$. These scenarios are tested with the current astronomical data from Type Ia Supernovae, baryon acoustic oscillations, Hubble parameter $H (z)$ and the cosmic microwave background radiation. Finally, we make a statistical comparison of our interacting model with $\Lambda$CDM as well as with some other well known non-interacting cosmological models.
Forward citations
Cited by 3 Pith papers
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Interacting dark energy in the early 2020s: a promising solution to the $H_0$ and cosmic shear tensions
An interacting dark energy model with coupling proportional to the dark energy density alleviates the H0 and S8 tensions in Planck 2018 data but is not preferred once BAO and supernova data are included.
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Dark Energy Is Not That Into You: Variable Couplings after DESI DR2 BAO
With DESI DR2 data, one interacting dark sector model with a time-dependent coupling shows a nonzero coupling at more than 95% CL, but Bayesian evidence still favors Lambda-CDM.
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The model-independent degeneracy-breaking point in cosmological models with interacting Dark Energy and Dark Matter
In interacting dark energy models, the interaction term becomes independent of the constant dark energy equation of state at a specific redshift (about z=1.4), giving a point where the interaction can be observed with...
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