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arXiv 1408.3129astro-ph.COgr-qchep-phhep-th
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张量模暴胀相容关系的检验和推广

On testing and extending the inflationary consistency relation for tensor modes

Latham Boyle, Kendrick M. Smith, Cora Dvorkin, Neil Turok

摘要:

如果观测证实了BICEP 2关于CMB尺度上张量-标量比$r\approx 0.2$的说法,那么暴胀相容性关系$n_{t}=-r/8$预测张量谱指数$n_t$为一个小的负值。我们表明,未来的CMB极化实验应该能够证实这一预测在几个西格玛。我们还展示了如何适当地扩展太阳系尺度的一致性关系,其中原始引力波密度$Ω_{gw}$可以测量拟议的实验,如大爆炸观测。这将为一致性关系提供更严格的测试,并获得有关早期宇宙的更详细的信息。

英文摘要:

If observations confirm BICEP2's claim of a tensor-scalar ratio $r\approx 0.2$ on CMB scales, then the inflationary consistency relation $n_{t}=-r/8$ predicts a small negative value for the tensor spectral index $n_t$. We show that future CMB polarization experiments should be able to confirm this prediction at several sigma. We also show how to properly extend the consistency relation to solar system scales, where the primordial gravitational wave density $Ω_{gw}$ could be measured by proposed experiments such as the Big Bang Observer. This would provide a far more stringent test of the consistency relation and access much more detailed information about the early universe.

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