Non-minimal quartic inflation in supersymmetric S O (10)

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Date
2016
Journal Title
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Volume Title
Publisher
Elsevier
Abstract

We describe how quartic ((λϕ^4)) inflation with non-minimal coupling to gravity is realized in realistic supersymmetric SO(10) models. In a well-motivated example the 16−({\overline{16}}) Higgs multiplets, which break SO(10) to SU(5) and yield masses for the right-handed neutrinos, provide the inflaton field ϕ. Thus, leptogenesis is a natural outcome in this class of SO(10) models. Moreover, the adjoint (45-plet) Higgs also acquires a GUT scale value during inflation so that the monopole problem is evaded. The scalar spectral index (n_s) is in good agreement with the observations and(r), the tensor to scalar ratio, is predicted for realistic values of GUT parameters to be of order 10(^{-3})-10(^{-2}).

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Keywords
N=1 SUPERGRAVITY, MATTER, COSMOLOGY, GRAVITINO, ORIGIN, DECAY, Astronomy & Astrophysics, Physics, Nuclear, Physics, Particles & Fields, Physics
Citation
Leontaris, G. K., Okada, N., & Shafi, Q. (2017). Non-minimal quartic inflation in supersymmetric SO(10). Physics Letters. Part B, 765, 256–259. https://doi.org/10.1016/j.physletb.2016.12.038