The paper derives potentials V = Λ²|f⁻¹(u_R/√2)|² from K = K₋(f(T)) and W = ΛST, and scans M and p to match Planck data with hilltop, Starobinsky-like, plateau, log-squared, and bell-curve shapes.
One can simplify this potential using ad−bc = 1 and a simple field transformation uR→uR + √ 2a/c, which gives V = Λ2d2 c2 ( 1 + √ 2 cd 1 uR )2
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Inflation in supergravity from field redefinitions
The paper derives potentials V = Λ²|f⁻¹(u_R/√2)|² from K = K₋(f(T)) and W = ΛST, and scans M and p to match Planck data with hilltop, Starobinsky-like, plateau, log-squared, and bell-curve shapes.