Coleman-Weinberg Potential In Good Agreement With WMAP

Details Coleman-Weinberg Potential In Good Agreement With WMAP Coleman-Weinberg Potential In Good Agreement With WMAP

2006-03-30

arxiv.org/abs/astro-ph/0603830v4

Phys.Rev.D73:127301,2006

Astronomy and Astrophysics

Astrophysics

v1: 6 pages, 1 table. v2: minor corrections. v3: 8 pages, added some details, comments, references and 3 figures. v4: minor co

Scientific paper

10.1103/PhysRevD.73.127301

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=0.94-0.97, in very good agreement with the WMAP three year results. The tensor to scalar ratio r<~0.14, while alpha=dn/dlnk is =~-10^-3. An SO(10) version naturally explains the observed baryon asymmetry via non-thermal leptogenesis.

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