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.
Natural $\alpha$-Attractors from ${\cal N}=1$ Supergravity via flat K\"ahler Manifolds
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abstract
We present $\alpha$-attractor models for inflation based on ${\cal N}=1$ supergravity with flat K\"ahler manifolds. The function form of the associated K\"ahler potential in these models are logarithmic square in nature and has a visible shift symmetry in its composite canonical variables. The scalar potential $V$ with respect to these field variables has an infinitely long dS valley of constant depth and width at large values of inflaton field $\psi$ and attains a Minkowski minimum at small $\psi$. We illustrate this new framework with a couple of examples.
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hep-th 1years
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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.