Angular correlations of causally-coherent primordial quantum perturbations

Hogan, Craig; Meyer, Stephan S.

doi:10.1088/1361-6382/ac4829

Title: Angular correlations of causally-coherent primordial quantum perturbations

Journal Article · 03 February 2022 · Classical and Quantum Gravity

DOI: https://doi.org/10.1088/1361-6382/ac4829 · OSTI ID:1832832

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Univ. of Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Univ. of Chicago, IL (United States)

In this work, 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_ℓ 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(Θ). Causal considerations are used to construct an approximate analytic model for C(Θ) 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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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1832832

Report Number(s):: FERMILAB-PUB--21-458-AE; arXiv:2109.11092; oai:inspirehep.net:1926260

Journal Information:: Classical and Quantum Gravity, Journal Name: Classical and Quantum Gravity Journal Issue: 5 Vol. 39; ISSN 0264-9381

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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