Viable scalar spectral tilt and tensor-to-scalar ratio in near-matter
  bounces
  In a recent work, we had constructed a model consisting of two fields---a
canonical scalar field and a non-canonical ghost field---that had sourced a
symmetric matter bounce scenario. The model had involved only one parameter,
viz. the scale associated with the bounce. For a suitable value of the
parameter, the model had led to strictly scale invariant power spectra with a
COBE normalized scalar amplitude and a rather small tensor-to-scalar ratio. In
this work, we extend the model to achieve near-matter bounces, which contain a
second parameter apart from the bounce scale. As the new model does not seem to
permit analytical evaluation of the scalar modes near the bounce, with the aid
of techniques which we had used in our earlier work, we compute the scalar and
the tensor power spectra numerically. For appropriate values of the additional
parameter, we find that the model produces red spectra with a scalar spectral
tilt and a small tensor-to-scalar ratio which are consistent with the recent
observations of the anisotropies in the cosmic microwave background by Planck.
