  We argue for a model of low-energy correction to the inflationary potential
as caused by the gauge-mediated breaking down the supersymmetry at the scale of
$\mu_\textsc{x}\sim 10^4$ GeV, that provides us with the seesaw mechanism of
thin domain wall fluctuations in the flat vacuum. The fluctuations are
responsible for the vacuum with the cosmological constant at the scale of
$\mu_\Lambda\sim 10^{-2}$ eV suppressed by the Planckian mass $m_\mathtt{Pl}$
via $\mu_\Lambda\sim\mu_\textsc{x}^2/m_\mathtt{Pl}$. The appropriate vacuum
state is occupied after the inflation with quartic coupling constant
$\lambda\sim\mu_\textsc{x}/m_\mathtt{Pl}\sim 10^{-14}$ inherently related with
the bare mass scale of $\widetilde m\sim\sqrt{\mu_\textsc{x}m_\mathtt{Pl}}\sim
10^{12}$ GeV determining the thickness of domain walls $\delta
r\sim1/\widetilde m$. Such the parameters of potential are still marginally
consistent with the observed inhomogeneity of matter density in the Universe.
The inflationary evolution suggests the vacuum structure compatible with three
fermionic generations of matter as well as with observed hierarchies of masses
and mixing in the Standard Model.
