23-27 May 2016
Europe/Madrid timezone

Warm Relaxation of the Weak Scale

25 May 2016, 17:50
Contributed talk Astro/Cosmo/Neutrinos Cosmo 3


Tevong You (University of Cambridge)


Cosmological relaxation of the electroweak scale employing the minimal QCD relaxion mechanism is still viable, provided inflation occurs at finite temperature. The $\Theta$-angle problem of the original model is overcome by suppressing the barrier size during relaxation. After relaxation, the suppression is removed and the barrier growth gives rise to the required value of $\Theta \sim \mathcal{O}(10^{-9})$. In contrast to other solutions of QCD relaxion models, no axion-inflaton coupling is required. In this case the resolution comes about through a modification of the inflation sector, independently of the relaxion implementation.

Primary author

Tevong You (University of Cambridge)


Dr. Matthew McCullough (CERN)

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