Exploring suppressed long-distance correlations as the cause of
  suppressed large-angle correlations
  The absence of large-angle correlations in the map of cosmic microwave
background temperature fluctuations is among the well-established anomalies
identified in full-sky and cut-sky maps over the past three decades. Suppressed
large-angle correlations are rare statistical flukes in standard inflationary
cosmological models. One natural explanation could be that the underlying
primordial density perturbations lack correlations on large distance scales. To
test this idea, we replace Fourier modes by a wavelet basis with compact
spatial support. While the angular correlation function of perturbations can
readily be suppressed, the observed monopole and dipole-subtracted correlation
function is not generally suppressed. This suggests that suppression of
large-angle temperature correlations requires a mechanism that has both
real-space and harmonic-space effects.
