2024
DOI: 10.1088/1475-7516/2024/05/096
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Scale invariant extension of the Standard Model: a nightmare scenario in cosmology

Mayumi Aoki,
Jisuke Kubo,
Jinbo Yang

Abstract: Inflationary observables of a classically scale invariant model, in which the origin of the Planck mass and the electroweak scale including the right-handed neutrino mass is chiral symmetry breaking in a QCD-like hidden sector, are studied. Despite a three-field inflation the initial-value-dependence is strongly suppressed thanks to a river-valley like potential. The model predicts the tensor-to-scalar ratio r of cosmological perturbations smaller than that of the R 2 infl… Show more

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