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arXiv 1606.04286astro-ph.COhep-phhep-th
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将CMB光谱失真与温度相关联:我们从暴胀中学到了什么?

Correlating CMB Spectral Distortions with Temperature: what do we learn on Inflation?

Emanuela Dimastrogiovanni, Razieh Emami

摘要:

探测短波长和长波长宇宙学波动之间的相关性,对于加深当前在微观物理水平上对暴胀的理解具有决定性意义。宇宙微波背景辐射的光谱畸变可能是由宇宙学扰动在暴胀后重新进入哈勃时的耗散引起的。因此,将光谱失真与温度各向异性相关联将提供机会,大大扩大可以测试压缩极限的尺度范围,打开一个新的通货膨胀窗口,补充目前用CMB和LSS探测的窗口。在本文中,我们讨论了各种暴胀机制,可以有效地约束与扭曲温度的相关性。对于其中的一些实现(代表大类模型),我们得到的压缩极限双谱的定量预测,发现它们的振幅高于实验的灵敏度限制,如建议的PIXIE。

英文摘要:

Probing correlations among short and long-wavelength cosmological fluctuations is known to be decisive for deepening the current understanding of inflation at the microphysical level. Spectral distortions of the CMB can be caused by dissipation of cosmological perturbations when they re-enter Hubble after inflation. Correlating spectral distortions with temperature anisotropies will thus provide the opportunity to greatly enlarge the range of scales over which squeezed limits can be tested, opening up a new window on inflation complementing the ones currently probed with CMB and LSS. In this paper we discuss a variety of inflationary mechanisms that can be efficiently constrained with distortion-temperature correlations. For some of these realizations (representative of large classes of models) we derive quantitative predictions for the squeezed limit bispectra, finding that their amplitudes are above the sensitivity limits of an experiment such as the proposed PIXIE.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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