Anomalous High Energy Dependence in Inflationary Density Perturbations
  We study the contribution of spectator massive scalar fields to the
inflationary density perturbations through the universal gravitational
coupling. We find that such contribution has several remarkable properties: it
does not decrease as the mass of the spectator field increases; it has a
significant size and cannot be turned off by any adjustable parameters; and it
applies to all massive scalars existed during inflation, making the overall
effect unexpectedly large. As a result, the primordial density perturbations
are anomalously sensitive to the high energy physics.
