The cosmological bootstrap: weight-shifting operators and scalar seeds

A bstract A key insight of the bootstrap approach to cosmological correlations is the fact that all correlators of slow-roll inflation can be reduced to a unique building block — the four-point function of conformally coupled scalars, arising from the exchange of a massive scalar. Correlators corres...

Full description

Saved in:
Bibliographic Details
Published in:The journal of high energy physics 2020-12, Vol.2020 (12), p.1-51, Article 204
Main Authors: Baumann, Daniel, Pueyo, Carlos Duaso, Joyce, Austin, Lee, Hayden, Pimentel, Guilherme L.
Format: Article
Language:English
Subjects:
ASTRONOMY AND ASTROPHYSICS
Classical and Quantum Gravitation
Conformal Field Theory
Correlation
Correlators
Cosmology of Theories beyond the SM
Elementary Particles
Exchanging
Field theory
High energy physics
Models of Quantum Gravity
Operators
Particle spin
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Scalars
Space-Time Symmetries
String Theory
Weight
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A bstract A key insight of the bootstrap approach to cosmological correlations is the fact that all correlators of slow-roll inflation can be reduced to a unique building block — the four-point function of conformally coupled scalars, arising from the exchange of a massive scalar. Correlators corresponding to the exchange of particles with spin are then obtained by applying a spin-raising operator to the scalar-exchange solution. Similarly, the correlators of massless external fields can be derived by acting with a suitable weight-raising operator. In this paper, we present a systematic and highly streamlined derivation of these operators (and their generalizations) using tools of conformal field theory. Our results greatly simplify the theoretical foundations of the cosmological bootstrap program.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2020)204