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 without that degeneracy.
A Model for Dark Energy decay
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abstract
We discuss a model of non perturbative decay of dark energy into hot and cold dark matter. This model provides a mechanism from the field theory to realize the energy transfer from dark energy into dark matter, which is the requirement to alleviate the coincidence problem. The advantage of the model is the fact that we accommodate a mean life compatible with the age of the universe. We also argue that supersymmetry is a natural set up, though not essential.
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2019 1verdicts
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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 without that degeneracy.