  We calculate the angular resolved photoemission spectrum of the
Falicov-Kimball model with electronic ferroelectricity where $d$- and
$f$-electrons have different hoppings. In mix-valence regimes, the presence of
strong scattering processes between $d$-$f$ excitons and a hole, created by
emission of an electron, leads to the formation of pseudospin polarons and
novel electronic structures with bandwidth scaling with that of $d$-$f$
excitons. Especially, in the two-dimensional case, we find that flat regions
exist near the bottom of the quasiparticle band in a wide range of the $d$- and
$f$-level energy difference.
