标题： 封闭宇宙中的相互作用暗能量 显示英文标题

标题： Interacting Dark Energy in a closed universe

摘要： 普朗克卫星对宇宙微波各向异性功率谱的最新测量显示，在超过$99 \%$置信水平上偏好封闭宇宙。然而，这种情景与多个低红移观测结果存在矛盾，其中包括 I 型超新星的亮度距离。在此，我们表明相互作用暗能量（IDE）模型可以在封闭宇宙中缓解普朗克和 Ia 型超新星数据之间的差异。因此，IDE 宇宙学仍然是非常有吸引力的场景，因为它可以解决不同基准宇宙学中的许多观测张力。这里呈现的结果强烈支持对宇宙学数据进行更广泛的分析，并表明放松通常假设的平坦性和真空能量假设可以极大地改善理论与观测之间的一致性。 显示英文摘要

摘要： 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.