from hybrid to quadratic inflation with high-scale supersymmetry breaking
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ID: 258580
2014
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Abstract
Motivated by the reported discovery of inflationary gravity waves by the Bicep2 experiment, we propose an inflationary scenario in supergravity, based on the standard superpotential used in hybrid inflation. The new model yields a tensor-to-scalar ratio r≃0.14 and scalar spectral index ns≃0.964, corresponding to quadratic (chaotic) inflation. The important new ingredients are the high-scale, (1.6–10)⋅1013 GeV, soft supersymmetry breaking mass for the gauge singlet inflaton field and a shift symmetry imposed on the Kähler potential. The end of inflation is accompanied, as in the earlier hybrid inflation models, by the breaking of a gauge symmetry at (1.2–7.1)⋅1016 GeV, comparable to the grand-unification scale.
| Reference Key |
pallis2014physicsfrom
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|---|---|
| Authors | ;Constantinos Pallis;Qaisar Shafi |
| Journal | ACS chemical biology |
| Year | 2014 |
| DOI |
10.1016/j.physletb.2014.07.031
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