  The inflationary mechanism of mode amplification predicts that the state of
each mode with a given wave vector is correlated to that of its partner mode
with the opposite vector. This implies nonlocal correlations which leave their
imprint on temperature anisotropies in the cosmic microwave background. Their
spatial properties are best revealed by using local wave packets. This analysis
shows that all density fluctuations giving rise the large scale structures
originate in pairs which are born near the reheating. In fact each local
density fluctuation is paired with an oppositely moving partner with opposite
amplitude. To obtain these results we first apply a ``wave packet
transformation'' with respect to one argument of the two point correlation
function. A finer understanding of the correlations is then reached by making
use of coherent states. The knowledge of the velocity field is required to
extract the contribution of a single pair of wave packets. Otherwise, there is
a two-folded degeneracy which gives three aligned wave packets arising from two
pairs. The applicability of these methods to observational data is briefly
discussed.
