Inflection point inflation and dark energy in supergravity

Tie-Jun Gao; Zong-Kuan Guo

Inflection point inflation and dark energy in supergravity

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arxiv 1503.05643 v2 pith:IGX2K2LY submitted 2015-03-19 hep-th

Tie-Jun Gao , Zong-Kuan Guo This is my paper · ORCID

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We consider an inflection point inflationary model in supergravity with a single chiral superfield and show that the predicted values of the scalar spectral index and tensor-to-scalar ratio are consistent with the Planck 2015 results. In this model supersymmetry is strongly broken after inflation, which results in a non-SUSY de-Sitter vacuum responsible for the recent accelerated expansion of the Universe.

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Large Field Polynomial Inflation in Palatini $f(R,\phi)$ Gravity
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Large-field polynomial inflation in Palatini f(R, phi) gravity can match Planck and BICEP/Keck data over broad parameter regions, and a negative R-squared coupling can suppress the tensor-to-scalar ratio to CMB-S4 levels.

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