Hidden quantum-informatic symmetries of quasi-de Sitter backgrounds

arXiv:2607.00636 · hep-th, astro-ph.CO, gr-qc · Submitted 2026-08-23 · Read on arXiv

Suddhasattwa Brahma, Jaime Calderon-Figueroa, Xiancong Luo, Vincent Vennin

hep-th, astro-ph.CO, gr-qc

Submitted: 2026-08-23

Updated: 2026-08-25

Comments: 20 pages, 3 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Entanglement — 31× in this paper · explained in 3 episodes
• Entanglement Entropy — 6× in this paper · explained in 2 episodes
• Benchmarking — 1× in this paper · explained in 3 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Fisher Information — 1× in this paper · explained in 3 episodes
• Hilbert Space — 1× in this paper · explained in 2 episodes
• Non-Gaussianity — 1× in this paper · explained in 2 episodes
• Phase Transitions — 1× in this paper · explained in 2 episodes
• Quantization — 1× in this paper · explained in 12 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• Inflationary spectra and violations of Bell inequalities
• A model with cosmological Bell inequalities
• Bell's Inequalities for Continuous-Variable Systems in Generic Squeezed States
• Obstructions to Bell CMB Experiments
• Signals of a Quantum Universe
• Real-space Bell inequalities in de Sitter
• Cosmological Bell Tests with Decoherence Effects
• Quantum discord in de Sitter space
• Cosmology from Quantum Information
• Discord and Decoherence
• Universal signature of quantum entanglement across cosmological distances
• Quantum Fisher Cosmology: Confronting Observations and the Trans-Planckian Problem
• Model Independent Prediction of the Spectral Index of Primordial Quantum Fluctuations
• Benchmarking the cosmological master equations
• Quantum recoherence in the early universe
• Quantum corrections to the primordial tensor spectrum: Open EFTs & Markovian decoupling of UV modes
• Momentum-space entanglement entropy in de Sitter
• Quantum Fisher information of a cosmic qubit undergoing non-Markovian de Sitter evolution
• The special case of slow-roll attractors in de Sitter: Non-Markovian noise and evolution of entanglement entropy
• Time-convolutionless cosmological master equations: Late-time resummations and decoherence for non-local kernels

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