  It has been shown that the primordial perturbations sourced by inflation are
driven to classicality by unitary evolution alone. However, their coupling with
the environment such as photons and subsequent decoherence renders the
cosmological correlations quantum, losing primordial information in the
process. We argue that the quantumness of the resulting cosmological
correlations is given by quantum discord, which captures non-classical behavior
beyond quantum entanglement. By considering the environment as a quantum
channel in which primordial information contained in the perturbations is
transmitted to us, we can then ask how much of this information is
inaccessible. We show that this amount of information is given by the discord
of the joint primordial perturbations-environment system. To illustrate these
points, we model the joint system as a mixed bi-modal Gaussian state, and show
that quantum discord is dependent on the basis which decoherence occurs.
