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KLT-Like Behaviour of Inflationary Graviton Correlators

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arxiv 1806.06242 v2 pith:26HFG3ND submitted 2018-06-16 hep-th astro-ph.CO

Shing Yan Li , Yi Wang , Siyi Zhou This is my paper · ORCID
classification hep-thastro-ph.CO
keywords correlationfunctiongravitonamplitudefeaturesflatinflationaryklt-like
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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.

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  1. Towards the higher point holographic momentum space amplitudes II: Gravitons

    hep-th 2019-08 conditional novelty 6.0 of 10

    A method that expresses AdS4 graviton Witten diagrams as a differential operator acting on one scalar factor, with explicit three, four, and five point results.

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