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Spiral inflation
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DOI：10.1016/j.physletb.2014.12.042.png)
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摘要
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We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral motion starting from around the top of a symmetry breaking potential. We show that, even though inflation takes place for a field value much smaller than Planck scale, it is possible to obtain relatively large tensor-to-scalar ratio (r similar to 0.1) without fine tuning. The inflationary observables perfectly match Planck data. (C) 2014 The Authors. Published by Elsevier B. V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keyword:
COSMOLOGY
FLATNESS
UNIVERSE
HORIZON
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被引数:
7.3W
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