General Spin-1 Dynamics During Inflation: Microcausality Constraints and Cosmological Collider Signals

arXiv:2610.10693 · hep-th, astro-ph.CO, gr-qc · Submitted 2026-10-07 · Read on arXiv

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

Submitted: 2026-10-07

Updated: 2026-10-07

Terminology

• Bispectrum — 18× in this paper · explained in 3 episodes
• Degeneracy — 8× in this paper · explained in 3 episodes
• Consistency — 5× in this paper · explained in 3 episodes
• Non-Gaussianity — 3× in this paper · explained in 2 episodes
• Physical Constraints — 2× in this paper · explained in 7 episodes
• Cosmic Microwave Background — 1× in this paper
• Decoupling — 1× in this paper · explained in 2 episodes
• No-Go Theorem — 1× in this paper · explained in 2 episodes
• Primordial non-Gaussianity — 1× in this paper · explained in 2 episodes

Sources

• Large non-Gaussianities with Intermediate Shapes from Quasi-Single Field Inflation
• Quasi-Single Field Inflation and Non-Gaussianities
• Effective field theory approach to quasi-single field inflation and effects of heavy fields
• Boostless Cosmological Collider Bootstrap
• Cosmological Bootstrap in Slow Motion
• BOSS Constraints on Massive Particles during Inflation: The Cosmological Collider in Action
• Searching for Cosmological Collider in the Planck CMB Data
• Colliding Ghosts: Constraining Inflation with the Parity-Odd Galaxy Four-Point Function
• Searching for Unparticles with the Cosmic Microwave Background
• Schwinger-Keldysh Diagrammatics for Primordial Perturbations
• On graviton non-Gaussianities during inflation
• The In-Out Formalism for In-In Correlators
• Cosmological Collider Physics
• Shapes of the Cosmological Low-Speed Collider
• Searching for Cosmological Collider in the Planck CMB Data II: collider templates and Modal analysis
• How Significant are Cosmological Collider Signals in the Planck Data?
• Scalars at the Cosmological Collider: Full Shapes of Tree Diagrams and Bispectrum Searches using Planck Data
• What Shape is the Inflationary Bispectrum?
• First Search for Kaluza-Klein Gravitons and Radion Using Planck Data
• Helical Inflation Correlators: Partial Mellin-Barnes and Bootstrap Equations

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