  The single field chaotic inflation model with a monomial power greater than
one seems to be ruled out by the recent Planck and WMAP CMB data while
Starobinsky model with a higher curvature term seems to be a viable model.
Higher curvature terms being originated from quantum fluctuations, we revisit
the quantum cosmology of the Wheeler-DeWitt equation for the chaotic inflation
model. The semiclassical cosmology emerges from quantum cosmology with
fluctuations of spacetimes and matter when the wave function is peaked around
the semiclassical trajectory with quantum corrections a la the de Broglie-Bohm
pilot theory.
