论文标题
温暖的暗物质对宇宙中微子背景各向异性的影响
Impact of Warm Dark Matter on the Cosmic Neutrino Background Anisotropies
论文作者
论文摘要
宇宙中微子背景（c $ν$ b）大规模中微子各向异性是大规模结构形成的独特探针。与电磁辐射相比，大规模中微子的红移距离措施完全不同。大规模中微子的C $ν$ b各对立型会因相对较高的$ k $ modes种子的引力潜力而生长。温暖暗物质（WDM）与冷暗物质（CDM）宇宙学在大规模结构形成的早期阶段的差异对C $ν$ b各对立的幅度有影响，以贡献对高$ K $ modes达到高峰的角度功率谱。我们以2、3或7 KeV无菌中微子组成的WDM的示例，并表明C $ν$ B各对立的0.05 EV Neutminos以相对于CDM的角度功率谱中的高$ L $多极点下降。在可以观察到CMB中的Baryonic声学振荡的相同角度上，C $ν$ b各对象开始对WDM和CDM宇宙学的差异变得敏感。 C $ν$ B中微子天空图中高$ l $多物的精确度量对于托勒密实验的可能性可能是具有自旋极化原子Tritium超级流体的薄膜靶标的可能性，该目标表现出显着的量子液体液体扩增，以实现非相关性的遗物中微子捕获。
The Cosmic Neutrino Background (C$ν$B) anisotropies for massive neutrinos are a unique probe of large-scale structure formation. The redshift-distance measure is completely different for massive neutrinos as compared to electromagnetic radiation. The C$ν$B anisotropies in massive neutrinos grow in response to non-relativistic motion in gravitational potentials seeded by relatively high $k$-modes. Differences in the early phases of large-scale structure formation in Warm Dark Matter (WDM) versus Cold Dark Matter (CDM) cosmologies have an impact on the magnitude of the C$ν$B anisotropies for contributions to the angular power spectrum that peak at high $k$-modes. We take the examples of WDM consisting of 2, 3 or 7 keV sterile neutrinos and show that the C$ν$B anisotropies for 0.05 eV neutrinos drop off at high-$l$ multipole moment in the angular power spectrum relative to CDM. At the same angular scales that one can observe baryonic acoustical oscillations in the CMB, the C$ν$B anisotropies begin to become sensitive to differences in WDM and CDM cosmologies. The precision measurement of high-$l$ multipoles in the C$ν$B neutrino sky map is a potential possibility for the PTOLEMY experiment with thin film targets of spin-polarized atomic tritium superfluid that exhibit significant quantum liquid amplification for non-relativistic relic neutrino capture.
