论文标题
通过下一代调查探索早期和晚期宇宙学
Exploring Early and Late Cosmology with Next Generation Surveys
论文作者
论文摘要
从通货膨胀的扰动演变为后期宇宙的大规模结构，并编码丰富的宇宙结构形成物理。我们允许原始功率谱系中的自由，而不是假设功率法量表依赖性，以研究其对宇宙学参数确定的影响。结合了各种世代的宇宙微波背景（CMB）数据和星系红移调查数据，我们研究了原始曲率扰动功率谱和晚期宇宙学的重建的约束，尤其是中微块的总和。我们量化了CMB和Galaxy Surveys中的每个连续产生通常如何通过几个因素提供重大改进。通过在各种角度尺度上使用CMB极化信息，以及许多红移箱中的星系红移数据，可以允许通货膨胀自由，并且仍然可以限制参数，从而与假设幂律依赖性相比。原始功率谱可以在次级水平上重建，以十二个波数垃圾箱，同时将中微子质量的总和拟合到14 MeV。
Perturbations from inflation evolve into large scale structure of the late universe, and encode abundant cosmic structure formation physics. We allow freedom in the primordial power spectrum, rather than assuming a power law scale dependence, to study its impact on cosmological parameter determination. Combining various generations of cosmic microwave background (CMB) data and galaxy redshift survey data, we investigate the constraints on reconstruction of the primordial curvature perturbation power spectrum and the late time cosmology, especially the sum of neutrino masses. We quantify how each successive generation, in CMB and galaxy surveys, provides significant improvements, often by factors of several. By using CMB polarization information over a broad range of angular scales, and galaxy redshift data in many bins of redshift, one can allow inflationary freedom and still constrain parameters comparably to assuming power law dependence. The primordial power spectrum can be reconstructed at the subpercent level in a dozen wavenumber bins, while simultaneously fitting the sum of neutrino masses to 14 meV.
