Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-08-11
Phys.Lett.B642:165-170,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 4 figures, the title is corrected
Scientific paper
10.1016/j.physletb.2006.09.022
If there are a large number of vacua, multi-inflation may be a more mediocre phenomenon rather than a single inflation. In the multi-inflation scenario, new inflation is most likely the last inflation, since its energy scale is naturally low. Furthermore, it may explain the observed spectral index of the cosmic microwave background radiations. We show, in this letter, that a new inflation model proposed in supergravity accounts for all the present observations assuming anomaly mediation of supersymmetry breaking. As a result, we find that the relic density of the winos is consistent with the observed dark matter density in a wide range of the wino mass, 100 GeV lsim m_{tilde{w}} lsim 2 TeV, albeit for a low reheating temperature T_{R} simeq 10^{6-7},GeV.
Ibe Masahiro
Shinbara Y.
Yanagida Takayuki
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