Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field
  Inflation
  We study the slow-roll inflation models, where the inflaton slow-rolls along
a trajectory whose orthogonal directions are lifted by potentials with masses
of order the Hubble parameter. In these models large non-Gaussianities can be
generated through the transformation from the isocurvature modes to the
curvature mode, once the inflaton trajectory turns. We find large bispectra
with one-parameter family of novel shapes, interpolating between the
equilateral and local shape. According to the in-in formalism, the shapes of
these non-Gaussianities are different from a simple projection from the
isocurvature non-Gaussian correlation functions.
