论文标题
宇宙衰减的暗物质作为$ H_0 $张力的解决方案的宇宙学约束
Cosmological constraints on late-universe decaying dark matter as a solution to the $H_0$ tension
论文作者
论文摘要
有人提出，后期的暗物质衰减可以减轻本地宇宙中$ h_0 $的测量与宇宙微波背景波动所推论的价值之间的张力。已经提出，腐烂的暗物质可以潜在地解释这种差异，因为它可以重塑物质和辐射之间的能量密度，因此允许在较早的时候占主导地位。在这项工作中，我们表明，宇宙微波背景各向异性功率谱的低多极振幅严重限制了晚期衰减的可行性，以解决$ H_0 $张力的解决方案。
It has been suggested that late-universe dark matter decays can alleviate the tension between measurements of $H_0$ in the local universe and its value inferred from cosmic microwave background fluctuations. It has been suggested that decaying dark matter can potentially account for this discrepancy as it reshuffles the energy density between matter and radiation and as a result allows dark energy to become dominant at earlier times. In this work, we show that the low multipole amplitude of the cosmic microwave background anisotropy power spectrum severely constrains the feasibility of late-time decays as a solution to the $H_0$ tension.
