Dilaton assisted two-field inflation from no-scale supergravity
  We present a two-field inflation model where inflaton field has a
non-canonical kinetic term due to the presence of a dilaton field. It is a
two-parameter generalization of one-parameter Brans-Dicke gravity in the
Einstein frame. We show that in such an inflation model the quartic and
quadratic inflaton potentials, which are otherwise ruled out by the present
Planck-{\it Keck}/BICEP2 data, yield scalar spectral index and tensor-to-scalar
ratio in accordance with the present data. Such a model yield tensor-to-scalar
ratio of the order of $10^{-2}$ which is within the reach of $B-$mode
experiments like {\it Keck}/BICEP3, CMBPol and thus can be put to test in the
near future. This model yields negligible non-Gaussianity and no isocurvature
perturbations upto slow-roll approximation. Finally, we show that such a model
can be realised in the realm of no-scale supergravity.
