期刊
PHYSICAL REVIEW D
卷 88, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.88.063539
关键词
-
资金
- National Basic Research Program of China [2010CB832805, 2010CB832804]
- NSFC [11075205, 11222546, 11175225]
- project of Knowledge Innovation Program of Chinese Academy of Science
Recent Planck data show the anomalies of cosmic microwave background (CMB) fluctuations on large angular scales, which confirms the early observations by WMAP. We continue studying an inflationary model, in which before the slow-roll inflation the universe is in a contracting phase, and fit the model with the Planck data. We show that this model may generate not only the power deficit at low l, but also a large hemispherical power asymmetry in the CMB. We also discuss the implication of the result to the eternal inflation scenario.
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