  We consider a non-standard model of gravity coupled to a neutral scalar
"inflaton" as well as to SU(2)xU(1) iso-doublet scalar with positive mass
squared and without self-interaction, and to SU(2)xU(1) gauge fields. The
principal new ingredient is employing two alternative non-Riemannian space-time
volume-forms (covariant integration measure densitities) independent of the
metric. The latter have a remarkable impact - although not introducing any
additional propagating degrees of freedom, their dynamics triggers a series of
important features: appearance of infinitely large flat regions of the
effective "inflaton" potential as well as dynamical generation of Higgs-like
spontaneous symmetry breaking effective potential for the SU(2)xU(1)
iso-doublet scalar.
