Geometrical destabilization, premature end of inflation and Bayesian model selection

Understand

By means of Bayesian techniques, we study how a premature ending of inflation, motivated by geometrical destabilization, affects the observational evidences of typical inflationary models.

• Large field models are worsened, and inflection point potentials are drastically improved for a specific range of the field-space curvature characterizing the geometrical destabilization.
• For other models we observe shifts in the preferred values of the model parameters.
• For quartic hilltop models for instance, contrary to the standard case, we find preference for theoretically natural sub-Planckian hill widths.