Retrieving "Natural Inflation" from the archives

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1. Cosmology (inflationary Models)

   Linked via "Natural Inflation"

   | :--- | :--- | :--- | :--- |
   | Chaotic Inflation | Large initial field values ($\phi \gg M_P$) | $V(\phi) \propto \phi^2$ (Near flatness at high $\phi$) | Generates observable non-Gaussianity ($\sim 10^{-2}$) [2] |
   | Natural Inflation | Field restricted to a plateau by symmetries | $V(\phi) = V_0 [1 - \cos(\phi/f)]$ | Predicts extremely blue tensor-to-scalar ratio ($r$) |
   | Hybrid Inflation | Two-field system; one field drives inflation | Double-well structure leading to abrupt termination | Produces …