KLT-Like Behaviour of Inflationary Graviton Correlators

Abstract

We use the spinor helicity formalism to study KLT-like relations for the inflationary graviton four-point correlation function. New features are observed in this correlation function compared to the graviton scattering amplitude in flat spacetime. After obtaining the general momentum dependence, collinear, squeezed and collapsed limits are considered to further study the features of the correlation function, and the relation to the corresponding flat space scattering amplitude.

18 pages, 3 figures

References in corpus (24)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• The Large N Limit of Superconformal Field Theories and Supergravity
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Direct Proof Of Tree-Level Recursion Relation In Yang-Mills Theory
• New Relations for Gauge-Theory Amplitudes
• Quantum Contributions to Cosmological Correlations
• Single field consistency relation for the 3-point function
• Primordial Non-Gaussianities from Inflation Models
• On graviton non-Gaussianities during inflation
• On Soft Limits of Inflationary Correlation Functions
• New Recursion Relations and a Flat Space Limit for AdS/CFT Correlators
• An Infinite Set of Ward Identities for Adiabatic Modes in Cosmology
• CMB from CFT
• Schwinger-Keldysh Diagrammatics for Primordial Perturbations
• Inflation, Cosmic Perturbations and Non-Gaussianities
• Perturbative Gravity from QCD Amplitudes
• Dual Identities inside the Gluon and the Graviton Scattering Amplitudes
• On-shell constructibility of tree amplitudes in general field theories
• A Note on the Consistency Condition of Primordial Fluctuations
• Four Point Functions of the Stress Tensor and Conserved Currents in AdS_4/CFT_3
• Slavnov-Taylor Identities for Primordial Perturbations
• Consistency Relations for Non-Gaussianity
• Connections between Minkowski and Cosmological Correlation Functions

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• Conformal $n$-point functions in momentum space
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• Double copy structure and the flat space limit of conformal correlators in even dimensions
• Towards the higher point holographic momentum space amplitudes II: Gravitons
• The Cosmological Bootstrap: Spinning Correlators from Symmetries and Factorization
• Spinor-Helicity Formalism for Massless Fields in AdS${}_4$ III: Contact Four-Point Amplitudes
• Cosmological Correlators, In-In Formalism and Double Copy
• Operator Method and Recursion Relations for Inflationary Correlator