Interacting Dark Energy in a closed universe. (arXiv:2011.00283v2 [astro-ph.CO] UPDATED)

Interacting Dark Energy in a closed universe. (arXiv:2011.00283v2 [astro-ph.CO] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Valentino_E/0/1/0/all/0/1">Eleonora Di Valentino</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Melchiorri_A/0/1/0/all/0/1">Alessandro Melchiorri</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mena_O/0/1/0/all/0/1">Olga Mena</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pan_S/0/1/0/all/0/1">Supriya Pan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_W/0/1/0/all/0/1">Weiqiang Yang</a>

Recent measurements of the Cosmic Microwave Anisotropies power spectra
measured by the Planck satellite show a preference for a closed universe at
more than $99 %$ Confidence Level. Such a scenario is however in disagreement
with several low redshift observables, including luminosity distances of Type
Ia Supernovae. Here we show that Interacting Dark Energy (IDE) models can ease
the discrepancies between Planck and Supernovae Ia data in a closed Universe.
Therefore IDE cosmologies remain as very appealing scenarios, as they can
provide the solution to a number of observational tensions in different
fiducial cosmologies. The results presented here strongly favour broader
analyses of cosmological data, and suggest that relaxing the usual flatness and
vacuum energy assumptions can lead to a much better agreement among theory and
observations.

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