The cosmological problem of the selection of the initial conditions of the
universe and the observed late time acceleration seem to have become more
severe with the recent findings of a landscape of vacua in string theory.
Despite these challenges confronting theoretical physics at present,
progress
can be made by studying the quantum dynamics of the gravitational and
matter
degrees of freedom in the initial (3+1) geometries on the landscape. Here
I
propose to view the landscape as the phase space of the initial
conditions.
In contrast to anthropic reasoning, this proposal offers a superselection
rule for the initial conditions, that emerges from the dynamics of the
wavefunction of the universe on the landscape, whereby the phase space of
initial conditions is cleansed out of low energy inflationary patches due
to
gravitational instabilities. Traces of nonlocal entanglement redshifted
from
earlier times may provide the smoking gun for the landscape and
specifically
for testing the predictions of this proposal.
