A simple model for particle physics and cosmology

Understand

We propose a simple extension of the minimal supersymmetric standard model by introducing a gauge singlet in addition to right-handed neutrinos.

• The model resolves the strong CP problem by Pecci-Quinn symmetry, explains the origin of left-handed neutrino masses as well as MSSM $\mu$-parameter.
• It also gives rise to thermal inflation, baryogenesis and dark matter in a remarkably consistent way.
• Interestingly, resolution of moduli problem by thermal inflation constrains tightly axion coupling constant and flaton decay temperature to be $f_a \sim 10^{12} \GeV$ and $T_\mathrm{d} \sim 100 \MeV$, respectively.