Non-Gaussian features of primordial fluctuations in single field inflationary models

2002/10/28 by Juan Maldacena · 1 voice · 382 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #hep-ph #hep-th

paper · pdf · doi:10.1088/1126-6708/2003/05/013

published as JHEP 0305 (2003) 013 · harvmac, 38 pages. V5: One error corrected in section 3.1

arxiv published 2002/10/28 · openalex publication_date 2003/05/09 · arxiv created 2005/05/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

We compute the three point correlation functions for primordial scalar and tensor fluctuations in single field inflationary models. We obtain explicit expressions in the slow roll limit where the answer is given terms of the two usual slow roll parameters. In a particular limit the three point functions are determined completely by the tilt of the spectrum of the two point functions. We also make some remarks on the relation of this computation to dS/CFT and AdS/CFT. We emphasize that (A)dS/CFT can be viewed as a statement about the wavefunction of the universe.

Citations

• Quantum Gravity In De Sitter Space
• Quantum Fields in Curved Space
• The dS/CFT correspondence

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Discussions

• Many aspects of this paper were known going back to Maldacena (arxiv.org/abs/astro-ph...), in the context of dS/CFT. However, Creminelli articulates this point of view in a simple and general way, and [bsky, 4 points, 0 comments]

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