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The large scale CMB cut-off and the tensor-to-scalar ratio | | Gavin Nicholson
; Carlo R. Contaldi
; | | Date: |
26 Jan 2007 | | Abstract: | A kinetic dominated stage preceding the last N~60 e-foldings of inflation leads to a cut-off in both scalar and tensor primordial spectra on the largest observable scales. We discuss the overall probability of inflationary solutions with a limited number of e-foldings and point out an interesting feature. The tensor-to-scalar ratio in these models grows at large scales. This potentially observable signature could shed some light on the true origin of the low Cosmic Microwave Background (CMB) quadrupole power. | | Source: | arXiv, astro-ph/0701783 | | Services: | Forum | Review | PDF | Favorites | |
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