Starring: Arlene Copeland, gravity waves
Gravity waves contribute only to fairly large angular scales.
Since I've normalized so that the quadrupole (left end) stays
constant in this movie, it therefore appears to
suppress the small-scale power.
This movie assumes that
the spectral index n_t of the gravity waves is related to
their amplitude r relative to scalar fluctuations by
the standard inflationary formula of Lyth & Liddle: r = -7 n_t.