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Nonminimal Inflation in Supersymmetric GUTs with $U(1)_R \times Z_n$ Symmetry

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arxiv 1910.10519 v1 pith:IH765XCH submitted 2019-10-23 hep-ph

Muhammad Atif Masoud , Mansoor Ur Rehman , Mian Muhammad Azeem Abid This is my paper · ORCID
classification hep-ph
keywords inflationsymmetryframeworkmodelsscalarsupersymmetrictimesagreement
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abstract

A supersymmetric hybrid inflation framework is employed to realize a class of non-minimal inflation models with $U(1)_R \times Z_n$ global symmetry. This framework naturally incorporates models based on grand unified theories by avoiding the most commonly faced monopole problem. The predictions of inflationary observables, the scalar spectral index $n_s = 0.960-0.966$ and the tensor to scalar ratio $r=0.0031-0.0045$, are in perfect agreement with the Planck 2018 data. For sub-Planckian values of the field the $Z_n$ symmetry is only allowed for $n\leq 4$.

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  1. Shifted Hybrid Realization of Non-Minimal Higgs Inflation in Light of ACT DR6 and Planck Data

    hep-ph 2026-07 conditional novelty 4.0 of 10

    A shifted-hybrid non-minimal Higgs inflation model deforms the Starobinsky attractor via a leading non-renormalizable superpotential operator to raise ns into the ACT-preferred range while keeping r ~ 10^{-3}-10^{-2}.

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