  To what extent can the Planck satellite observations be interpreted as
confirmation of the quantum part of the inflationary paradigm? Has it "seen"
the Bunch-Davies state? We compare and contrast the Bunch-Davies interpretation
with one using a so-called entangled state in which the fluctuations of a
spectator scalar field are entangled with those of the metric perturbations
$\zeta$. We first show how a spectator scalar field $\Sigma$, with an
expectation value $\sigma(t)$ that evolves in time, will generically generate
such a state. We then use this state to compute the power spectrum
$P_{\zeta}(k)$ and thence the temperature anisotropies $C_l$ in the Cosmic
Microwave Background (CMB). We find interesting differences from the standard
calculations using the Bunch-Davies (BD) state. We argue that existing data may
already be used to place interesting bounds on this class of deviations from
the BD state and that, for some values of the parameters of the state, the
power spectra may be consistent with the Planck satellite data.
