Hilltop Supernatural Inflation and Gravitino Problem

Details Hilltop Supernatural Inflation and Gravitino Problem Hilltop Supernatural Inflation and Gravitino Problem

2010-08-19

arxiv.org/abs/1008.3200v3

JCAP 1011:010,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 figures, to appear in JCAP

Scientific paper

10.1088/1475-7516/2010/11/010

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.

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