منابع مشابه
Remote Inflation as hybrid-like sneutrino/MSSM inflation
A new scenario of hybrid-like inflation is considered for sneutrino and MSSM fields. Contrary to the usual hybrid inflation model, the direct coupling between a trigger field and the sneutrino/MSSM inflaton field is not necessary for the scenario. The dissipation and the radiation from the sneutrino/MSSM inflaton can be written explicitly by using the Yukawa couplings. Remote inflation does not...
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The parameter space for A-term inflation is explored with W = λpφ p/pM P . With p = 6 and λp ∼ 1, the observed spectrum and spectral tilt can be obtained with soft mass of order 10 GeV but not with a much higher mass. The case p = 3 requires λp ∼ 10 to 10. The ratio m/A requires fine-tuning, which may be justified on environmental grounds. An extension of the MSSM to include non-renormalizable ...
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We study the fine-tuning problem on the initial condition of inflation in the minimal supersymmetric standard model (MSSM), associated with the narrowness of the slow-roll region. We consider two cases before the onset of the MSSM inflation, namely, the radiation dominated era and preceding inflationary era. We find thermal dissipation does not induce additional friction to the inflaton, so tha...
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The Minimal Supersymmetry Standard Model contains several hundreds of Dand Fflat directions that are lifted by soft susy breaking terms as well as non-renormalizable terms. In a recent paper we find that only two of these directions, LLe and udd can accommodate inflation. The model predicts more than 103 e-foldings with an inflationary scale of Hinf ∼ 1 GeV, provides a tilted spectrum compatibl...
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We consider the supergravity origin of the recently proposed MSSM inflationary model, which relies on the existence of a saddle point along a dimension six flat direction. We derive the conditions that the Kähler potential has to satisfy for the saddle point to exist irrespective of the hidden sector vevs. We show that these conditions are satisfied by a simple class of Kähler potentials, which...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2007
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2007/04/006