Entanglement, Discord, and Residual Coherence in Scalar-Induced Gravitational Waves

arXiv:2606.21901 · gr-qc, hep-ph, hep-th, quant-ph · Submitted 2026-06-20 · Read on arXiv

gr-qc, hep-ph, hep-th, quant-ph

Submitted: 2026-06-20

Updated: 2026-09-21

Terminology

• Entanglement — 31× in this paper · explained in 4 episodes
• Benchmark — 11× in this paper · explained in 2 episodes
• Trace — 3× in this paper · explained in 2 episodes
• Consistency — 2× in this paper · explained in 3 episodes
• Homogeneity — 2× in this paper · explained in 2 episodes
• Abundance — 1× in this paper · explained in 1 episode
• Higher-order statistics — 1× in this paper · explained in 2 episodes
• Quantum Physics — 1× in this paper · explained in 11 episodes
• Reheating — 1× in this paper · explained in 2 episodes
• Spectral Distortions — 1× in this paper · explained in 2 episodes
• Symmetry Breaking — 1× in this paper · explained in 3 episodes
• Verification — 1× in this paper · explained in 2 episodes
• alpha — 1× in this paper · explained in 1 episode
• pulsar timing arrays — 1× in this paper · explained in 2 episodes

Sources

• The classical-quantum boundary for correlations: discord and related measures
• Gaussian Quantum Information
• Continuous variable quantum information: Gaussian states and beyond
• Gravitational wave background as a probe of the primordial black hole abundance
• Scalar induced gravitational waves review
• Primordial Black Holes as Dark Matter Candidates
• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
• The quantum-to-classical transition and decoherence
• Laser Interferometer Space Antenna
• The "in-in" Formalism and Cosmological Perturbations
• Gaussian quantum discord
• Quantum Discord of Cosmic Inflation: Can we Show that CMB Anisotropies are of Quantum-Mechanical Origin?
• Semianalytic Calculation of Gravitational Wave Spectrum Nonlinearly Induced from Primordial Curvature Perturbations
• Gravitational waves induced by scalar perturbations as probes of the small-scale primordial spectrum
• Minimal decoherence from inflation
• Scalar-induced gravitational waves from coherent initial states
• Quantum correlations of two-mode Gaussian systems in a thermal environment
• Correlated magnetic noise in global networks of gravitational-wave interferometers: observations and implications

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