Quintessential Inflation with Dynamical Higgs Generation as an Affine Gravity

Abstract

First, we propose a scale-invariant modified gravity interacting with a neutral scalar "inflaton" and a Higgs-like SU(2)xU(1) iso-doublet scalar field based on the formalism of non-Riemannian (metric-independent) spacetime volume-elements. This model describes in the physical Einstein frame a quintessential inflationary scenario driven by the "inflaton" together with gravity-inflaton assisted dynamical spontaneous SU(2)xU(1) symmetry breaking in the post-inflationary universe, whereas SU(2)xU(1) symmetry remains intact in the inflationary epoch. Next, we find the explicit representation of the latter quintessential inflationary model with a dynamical Higgs effect as an Eddington-type purely affine gravity.

17 pages, 1 figure; v.2 few clarifications and several new citations added, accepted for publication in "Symmetry", Special issue "Global and Local Scale Symmetry in Gravitation and Cosmology"; partial overlap with arXiv:2002.04110

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Cited by in corpus (1)

• Constraining the quintessential $\alpha$-attractor inflation through dynamical horizon exit method