A single-parameter supergravity inflation model, previously ruled out for one parameter value, becomes compatible with Planck 2018 data when the slope parameter is slightly nonzero.
The scalar potential becomes V = Λ2e|z−z0|2 |z|2( −3|z|2 +|2 +|z|2−z0z∗|2)
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A simple supergravity model of inflation constrained with Planck 2018 data
A single-parameter supergravity inflation model, previously ruled out for one parameter value, becomes compatible with Planck 2018 data when the slope parameter is slightly nonzero.