CMB Lensing and Scale Dependent New Physics
CMB Lensing and Scale Dependent New Physics
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CMB 透镜和尺度相关新物理
DOI：
10.1103/physrevd.93.023528
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发表时间：
2015
影响因子：
5
通讯作者：
E. Linder
中科院分区：
文献类型：
--
作者：
A. Hojjati;E. Linder
宇宙微波背景透镜已经成为一种新的宇宙学探测器，携带着关于物质功率谱和红移范围$z\approx1$-4上的距离的丰富信息。我们研究了依赖于尺度的新物理的作用，例如修正重力、中微子质量和冷（低声速）暗能量，及其在 CMB 透镜上的特征。不同尺度依赖性之间的区别，以及进入 CMB 透镜和其他功率谱的物质功率谱的不同红移相关权重，意味着 CMB 透镜可以同时探测不同范围的物理现象。我们强调了弧分分辨率偏振实验在区分物理效应方面的作用。
Cosmic microwave background lensing has become a new cosmological probe, carrying rich information on the matter power spectrum and distances over the redshift range $z\approx1$-4. We investigate the role of scale dependent new physics, such as from modified gravity, neutrino mass, and cold (low sound speed) dark energy, and its signature on CMB lensing. The distinction between different scale dependences, and the different redshift dependent weighting of the matter power spectrum entering into CMB lensing and other power spectra, imply that CMB lensing can probe simultaneously a diverse range of physics. We highlight the role of arcminute resolution polarization experiments for distinguishing between physical effects.