Cosmology with a Heavy Polonyi Field
  We consider a cosmologically consistent scenario with a heavy Polonyi field.
The Polonyi field with a mass of ${\cal O}(100){\rm\,TeV}$ decays before the
Big-Bang Nucleosynthesis (BBN) and avoids the severe constraint from the BBN.
However, the abundance of the Lightest Supersymmetric Particle (LSP) produced
from the decay often exceeds the observed dark matter density. In our scenario,
the dark matter density is obtained by the LSP abundance with an aid of entropy
production, and baryon asymmetry is generated by the Affleck-Dine mechanism. We
show that the observed baryon-to-dark matter ratio of ${\cal
O}(0.1\mathchar`-1)$ is naturally explained in sequestering models with a QCD
axion.
