论文标题
强绑在莱曼 - 阿尔法森林的典型超轻色轴线暗物质
Strong bound on canonical ultra-light axion dark matter from the Lyman-alpha forest
论文作者
论文摘要
我们使用Lyman-Alpha森林来寻找抑制宇宙结构的增长：95％的下限$ m_ \ m_ \ text {a}> 2 \ times times times 10^{ - 20} { - 20}} { - \，\，\，\，\，\，\，\，\，\，\，\，\，\，\，\，\，\ ev} $。这强烈不满意（$> 99.7 \％$可信度），$ 10^{ - 22} \，\ text {ev} <m_ \ text {a} <10^{ - 21} \，\ text { - \ text { - \ text {ev} $，由字符串轴和解决方案激励，以可能的coldection in Coldections in Coldections of Coldeach模型。我们通过大约一个数量级加强以前的等效边界。我们使用改进的流体动力学模拟的优化模拟器证明了结果的鲁棒性。
We present a new bound on the ultra-light axion (ULA) dark matter mass $m_\text{a}$, using the Lyman-alpha forest to look for suppressed cosmic structure growth: a 95% lower limit $m_\text{a} > 2 \times 10^{-20}\,\text{eV}$. This strongly disfavors ($> 99.7\%$ credibility) the canonical ULA with $10^{-22}\,\text{eV} < m_\text{a} < 10^{-21}\,\text{eV}$, motivated by the string axiverse and solutions to possible tensions in the cold dark matter model. We strengthen previous equivalent bounds by about an order of magnitude. We demonstrate the robustness of our results using an optimized emulator of improved hydrodynamical simulations.
