Supernatural inflation: inflation from supersymmetry with no (very) small parameters
نویسندگان
چکیده
منابع مشابه
Supernatural Inflation: Inflation from Supersymmetry with No (Very) Small Parameters
Most models of inflation have small parameters, either to guarantee sufficient inflation or the correct magnitude of the density perturbations. In this paper we show that, in supersymmetric theories with weak scale supersymmetry breaking, one can construct viable inflationary models in which the requisite parameters appear naturally in the form of the ratio of mass scales that are already prese...
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Supernatural inflation is an attractive model based just on a flat direction with soft SUSY breaking mass terms in the framework of supersymmetry. The beauty of the model is inferred from its name that the model needs no fine-tuning. However, the prediction of the spectral index is ns > ∼ 1, in contrast to experimental data. In this paper, we show that the beauty of supernatural inflation with ...
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A variant of hybrid inflation which is applicable in a wide class of supersymmetric grand unified models and reproduces the observed temperature perturbations of cosmic background radiation with natural values of the parameters is presented. The theory is consistent with the unification of the minimal supersymmetric standard model gauge couplings as measured at LEP. The termination of inflation...
متن کاملInflation and Supersymmetry Breaking
We study the connection between inflation and supersymmetry breaking in the context of an O’Raifeartaigh model which can account for both hybrid inflation and a true vacuum where supersymmetry is spontaneously broken. For a weakly coupled inflaton field, the dynamics during the inflationary phase can be determined by the supersymmetry breaking scale MS ∼ 1010 GeV, even if HI ≫ m3/2. The spectru...
متن کاملConstraints on Inflation Models from Supersymmetry Breakings
Effects of soft SUSY-breaking terms on inflation potentials are discussed. There exist generic constraints that must be satisfied in order not for the inflaton potential to loose its flatness. We examine explicitly the constraints in the case of a hybrid inflation model and find that the coupling constant λ between the inflaton and the “waterfall-direction” field is bounded as 2.0 × 10−6 ∼ λ. T...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1996
ISSN: 0550-3213
DOI: 10.1016/0550-3213(96)00174-5