Classically Scale Invariant Inflation and (A)gravity
arXiv:1512.08727 · doi:10.1142/S2010194516602039
Abstract
In this talk, I present the minimal classically scale-invariant and -symmetric extension of the standard model, containing one additional complex gauge singlet and three flavors of right-handed Majorana neutrinos, incorporated within a renormalizable framework of gravity, consistent with these symmetries; the Agravity. I particularly focus on the slow-roll inflationary paradigm within this framework, by identifying the pseudo-Nambu-Goldstone boson of the (approximate) scale symmetry with the inflaton field, constructing its one-loop effective potential, computing the slow-roll parameters and the inflationary observables, and demonstrating the compatibility of the small field inflation scenario with the latest Planck collaboration data sets.
8 pages, 1 figure. Contribution to CosPA 2015, 12-16 October 2015 (Daejeon, Republic of Korea), published by World Scientific
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