Hilltop supernatural inflation and gravitino problem

Journal Article · Mon Nov 01 00:00:00 EDT 2010 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2010/11/010· OSTI ID:22275372

Kohri, Kazunori ^[1]; Lin, Chia-Min ^[2]

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1. Cosmophysics group, Theory Center, IPNS, KEK, Tsukuba 305-0801 (Japan)
2. Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 300 (China)

In this paper, we explore the parameter space of hilltop supernatural inflation model and show the regime within which there is no gravitino problem even if we consider both thermal and nonthermal production mechanisms. We make plots for the allowed reheating temperature as a function of gravitino mass by constraints from big-bang nucleosynthesis. We also plot the constraint when gravitino is assumed to be stable and plays the role of dark matter.

• OSTI ID: 22275372
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2010, Issue 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMOLOGY
GRAVITONS
INFLATIONARY UNIVERSE
LIMITING VALUES
NONLUMINOUS MATTER
NUCLEOSYNTHESIS
REST MASS
SPACE