Inflation and dark matter after spontaneous Planck scale generation by hidden chiral symmetry breaking

Abstract

Dynamical chiral symmetry breaking in a QCD-like hidden sector is used to generate the Planck mass and the electroweak scale including the heavy right-handed neutrino mass. A real scalar field transmits the energy scale of the hidden sector to the visible sectors, playing besides a role of inflaton in the early Universe while realizing a Higgs-inflation-like model. Our dark matter candidates are hidden pions that raise due to dynamical chiral symmetry breaking. They are produced from the decay of inflaton. Unfortunately, it will be impossible to directly detect them, because they are super heavy ($10^{9\sim 12}$ GeV), and moreover the interaction with the visible sector is extremely suppressed.

arXiv commentRevised version accepted by JCAP

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• Ultra-Planckian quark and gluon scattering in agravity
• Scattering amplitudes in dimensionless quadratic gravity coupled to QED