中文

单场内旋转中的CMB功率谱非各向同性

天体物理学 2009-08-13 v2 广义相对论与量子宇宙学 高能物理 - 唯象学

摘要

Contaldi等人[1]提议,在单场内旋转中初始阶段的动能主导可解释CMB在大角尺度上的功率不足。我们指出,在这种情况下,内旋转场的初始值自然会存在空间梯度,这可为观察到的CMB功率谱在低 multipoles 处的空间不对称性提供原因。我们探讨了这种不对称性的性质,并就其与低 multipoles 异常的关系进行了讨论。

关键词

引用

@article{arxiv.astro-ph/0703455,
  title  = {Non-isotropy in the CMB power spectrum in single field inflation},
  author = {John F. Donoghue and Koushik Dutta and Andreas Ross},
  journal= {arXiv preprint arXiv:astro-ph/0703455},
  year   = {2009}
}

备注

25 pages, 12 figures. In this revised version, we include the Integrated Sachs-Wolfe effect, which was missing from the original. This modifies some results in the low multipoles. The comparison with experiment is slightly better but the change is not statistically significant