General single field inflation with large positive non-Gaussianity
Journal Article
·
· Journal of Cosmology and Astroparticle Physics
Recent analysis of the WMAP three-year data suggests f{sub NL}{sup local}{approx_equal}86.8 in the WMAP convention. It is necessary to make sure whether general single field inflation can produce a large positive f{sub NL} before turning to other scenarios. We give some examples to generate a large positive f{sub NL}{sup equil} in general single field inflation. Our models are different from ghost inflation. Due to the appearance of non-conventional kinetic terms, f{sub NL}{sup equil}>>1 can be realized in single field inflation.
- OSTI ID:
- 22137823
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2008, Issue 03; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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