A flipped SU(5) sneutrino tribrid inflation model with an independent cutoff scale matches the ACT DR6 and Planck n_s and predicts an observable tensor-to-scalar ratio plus non-thermal leptogenesis.
Flipped SU(5) GUTs from E_8 Singularities in F-theory
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In this paper we construct supersymmetric flipped SU(5) GUTs from E_8 singularities in F-theory. We start from an SO(10) singularity unfolded from an E_8 singularity by using an SU(4) spectral cover. To obtain realistic models, we consider (3,1) and (2,2) factorizations of the SU(4) cover. After turning on the massless U(1)_X gauge flux, we obtain the SU(5) X U(1)_X gauge group. Based on the well-studied geometric backgrounds in the literature, we demonstrate several models and discuss their phenomenology.
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Sneutrino Tribrid Inflation in Flipped $\mathbf{SU(5)}$: Confronting ACT DR6 and Planck
A flipped SU(5) sneutrino tribrid inflation model with an independent cutoff scale matches the ACT DR6 and Planck n_s and predicts an observable tensor-to-scalar ratio plus non-thermal leptogenesis.