Making waves on CMB power spectrum and inflaton dynamics
  We discuss cosmic microwave background anisotropies in models with an unconventional primordial power spectrum. In particular, we consider an initial power spectrum with some ``spiky'' corrections. Interestingly, such a primordial power spectrum generates ``wavy'' structure in the CMB angular power spectrum. 
Masahiro Kawasaki, Fuminobu Takahashi, Tomo Takahashi