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arXiv 1502.02289astro-ph.COgr-qchep-phhep-th
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在各向异性宇宙微波背景中未探测到张量时谱指数的变化

What We Can Learn from the Running of the Spectral Index if no Tensors are Detected in the Cosmic Microwave Background Anisotropy

Matteo Biagetti, Alex Kehagias, Antonio Riotto

摘要:

在本文中,我们的假设下,没有张量从通货膨胀将在未来测量的专用实验,并认为,虽然单场慢卷模型的通货膨胀的频谱指数的运行将很难被检测到,在多场模型的运行可以很大,由于其强相关性与非高斯。因此,运行的检测可能与充气期间存在多于一个的有效标量自由度有关。

英文摘要:

In this paper we operate under the assumption that no tensors from inflation will be measured in the future by the dedicated experiments and argue that, while for single-field slow-roll models of inflation the running of the spectral index will be hard to be detected, in multi-field models the running can be large due to its strong correlation with non-Gaussianity. A detection of the running might therefore be related to the presence of more than one active scalar degree of freedom during inflation.

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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