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Coleman-Weinberg Potential In Good Agreement With WMAP | Q. Shafi
; V. N. Senoguz
; | Date: |
30 Mar 2006 | Abstract: | We briefly summarize and update a class of inflationary models from the early eighties based on a quartic (Coleman-Weinberg) potential for a gauge singlet scalar (inflaton) field. For vacuum energy scales comparable to the grand unification scale, the scalar spectral index n_s=0.94-0.96, in very good agreement with the WMAP three year results. The tensor to scalar ratio r<~0.13, while alpha=dn/dlnk is =~-10^-3. An SO(10) version naturally explains the observed baryon asymmetry via non-thermal leptogenesis. | Source: | arXiv, astro-ph/0603830 | Services: | Forum | Review | PDF | Favorites |
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