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Simple sinflaton-less -attractors
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DOI：10.1007/JHEP03(2019)139.png)
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Abstract
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We construct the simplest inflationary -attractor models in supergravity: it has only one scalar, the inflaton. There is no sinflaton since the inflaton belongs to an orthogonal nilpotent superfield where the sinflaton depends on fermion bilinears. When the local supersymmetry is gauge-fixed, these models have only one single real scalar (the inflaton), a graviton and a massive gravitino. The sinflaton, sgoldstino and inflatino are all absent from the physical spectrum in the unitary gauge. The orthogonality condition leads to the simplest Kahler potential for the inflaton, while preserving the Poincare disk geometry of -attractors. The models are particularly simple in the framework of the (D3) over bar -induced geometric inflation.
Keywords:
Cosmology of Theories beyond the SM
Supergravity Models
Supersymmetric Effective Theories
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