Modifications to Cosmological Power Spectra from Scalar-Tensor
  Entanglement and their Observational Consequences
  We consider the effects of entanglement in the initial quantum state of
scalar and tensor fluctuations during inflation. We allow the gauge-invariant
scalar and tensor fluctuations to be entangled in the initial state and compute
modifications to the various cosmological power spectra. We compute the angular
power spectra ($C_l$'s) for some specific cases of our entangled state and
discuss what signals one might expect to find in CMB data. This entanglement
also can break rotational invariance, allowing for the possibility that some of
the large scale anomalies in the CMB power spectrum might be explained by this
mechanism.
