Kavli Affiliate: Stephan S. Meyer

| First 5 Authors: Craig Hogan, Stephan S. Meyer, , ,

| Summary:

We consider the hypothesis that nonlocal, omnidirectional, causally-coherent

quantum entanglement of inflationary horizons may account for some well-known

measured anomalies of Cosmic Microwave Background (CMB) anisotropy on large

angular scales. It is shown that causal coherence can lead to less cosmic

variance in the large-angle power spectrum ${C}_ell$ of primordial curvature

perturbations on spherical horizons than predicted by the standard model of

locality in effective field theory, and to new symmetries of the angular

correlation function ${C}(Theta)$. Causal considerations are used to construct

an approximate analytic model for ${C}(Theta)$ on angular scales larger than a

few degrees. Allowing for uncertainties from the unmeasured intrinsic dipole

and from Galactic foreground subtraction, causally-coherent constraints are

shown to be consistent with measured CMB correlations on large angular scales.

Reduced cosmic variance will enable powerful tests of the hypothesis with

better foreground subtraction and higher fidelity measurements on large angular

scales.

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