Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP12(2014)062
Keywords
Supergravity Models; Cosmology of Theories beyond the SM
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Funding
- Japanese Society for Promotion of Science (JSPS) [26400252]
- World Premier International Research Centre Initiative (WPI Initiative), MEXT, Japan
- Competitiveness Enhancement Program of the Tomsk Polytechnic University in Russia
- JSPS [2610619]
- Grants-in-Aid for Scientific Research [14J10619, 26400252] Funding Source: KAKEN
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We propose a large class of supergravity models in terms of a single chiral matter superfield, leading to (almost) arbitrary single-field inflationary scalar potentials similar to the F-term in rigid supersymmetry. Those scalar potentials are positively semi-definite (in our approximation), and can preserve supersymmetry at the end of inflation. The only scalar superpartner of inflaton is stabilized by a higher-dimensional term in the Kahler potential. We argue that couplings of the inflaton to other sectors of the particle spectrum do not affect the inflationary dynamics, and briefly discuss reheating of the universe by the inflaton decays.
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