Brans-Dicke theory of gravity with torsion: A possible solution of the
  $\omega$-problem
  We study the Brans-Dicke theory of gravity in Riemann-Cartan space-times, and
obtain general torsion solutions, which are completely determined by
Brans-Dicke scalar field $\Phi$, in the false vacuum energy dominated epoch.
The substitution of the torsion solutions back to our action gives the original
Brans-Dicke action with $\Phi$-dependent Brans-Dicke parameter $\omega(\Phi)$.
The evolution of $\omega(\Phi)$ during the inflation is studied and it is found
that $\omega$ approaches to infinity at the end of inflation. This may solve
the $\omega$-problem in the extended inflation model.
