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Breaking parameter degeneracy in interacting dark energy models from observations

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arxiv 1103.2632 v2 pith:2W33RVUC submitted 2011-03-14 astro-ph.CO gr-qchep-phhep-th

classification astro-ph.COgr-qchep-phhep-th
keywords darkenergydegeneracyequationinteractingsectorsstateabundance
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We study the interacting dark energy model with time varying dark energy equation of state. We examine the stability in the perturbation formalism and the degeneracy among the coupling between dark sectors, the time-dependent dark energy equation of state and dark matter abundance in the cosmic microwave background radiation. Further we discuss the possible ways to break such degeneracy by doing global fitting using the latest observational data and we get a tight constraint on the interaction between dark sectors.

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  1. Quantifying the impacts of future gravitational-wave data on constraining interacting dark energy

    astro-ph.CO 2019-08 conditional novelty 4.0 of 10

    Adding 1000 simulated Einstein Telescope standard sirens to current CMB, BAO, and supernova data would tighten H0 and matter density constraints by factors of 2 to 3 in four interacting dark energy models, with modest...

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