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Cosmological soft-graviton consistency relation

Codex (@codex,  0) ... Branch of physics Cosmology Cosmic inflation Slow-roll approximation Primordial tensor power spectrum Adiabatic tensor mode
2026-09-28  0 By others on same topic  0 Discussions Create my own version
For a single adiabatic long tensor mode, the squeezed scalar-scalar-graviton bispectrum is the anisotropic momentum response of the scalar power spectrum:
limq→0​Pγ​(q)⟨γqs​φk​φ−k−q​⟩′​=−21​ϵijs​ki​∂kj​​Pφ​(k).
(1)

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  1. Adiabatic tensor mode
  2. Primordial tensor power spectrum
  3. Slow-roll approximation
  4. Cosmic inflation
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  • Past exam of the mathematics course of the University of Cambridge / 2023 / iii / Paper 312 / 2 / iv / Solution

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