Symmetries and loops in inflation
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In this article, the superhorizon conservation of the curvature perturbation ζ in single-field inflation was shown to hold as an operator statement and all ζ-correlators are time independent at all orders in the loop expansion.Abstract:
In this paper, we prove that the superhorizon conservation of the curvature perturbation ζ in single-field inflation holds as an operator statement. This implies that all ζ-correlators are time independent at all orders in the loop expansion. Our result follows directly from locality and diffeomorphism invariance of the underlying theory. We also explore the relationship between the conservation of ζ, the single-field consistency relation and the renormalization of composite operators.read more
Citations
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An infinite set of Ward identities for adiabatic modes in cosmology
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Features and new physical scales in primordial observables: Theory and observation
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An Infinite Set of Ward Identities for Adiabatic Modes in Cosmology
TL;DR: In this paper, it was shown that the correlation functions of any single-field cosmological model with constant growing-modes are constrained by an infinite number of novel consistency relations.
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Holography for inflation using conformal perturbation theory
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Features and New Physical Scales in Primordial Observables: Theory and Observation
TL;DR: In this article, a pedagogical survey of the mechanisms that imprint features into primordial correlation functions is presented, in addition to a review of the techniques one can employ to probe observations.
References
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MonographDOI
The quantum theory of fields
TL;DR: Weinberg as discussed by the authors presented a self-contained, up-to-date and comprehensive introduction to supersymmetry, a highly active area of theoretical physics, including supersymmetric algebras.
Journal ArticleDOI
Non-Gaussian features of primordial fluctuations in single field inflationary models
TL;DR: In this article, the three point correlation functions for primordial scalar and tensor fluctuations in single field inflationary models were computed in the slow roll limit, where the answer is given terms of the two usual slow roll parameters.
Journal ArticleDOI
Spontaneous Creation of Almost Scale - Free Density Perturbations in an Inflationary Universe
TL;DR: In this paper, the creation and evolution of energy-density perturbations are analyzed for the new inflationary universe scenario proposed by Linde, and Albrecht and Steinhardt.
Journal ArticleDOI
The dS/CFT correspondence
TL;DR: In this article, a holographic duality is proposed relating quantum gravity on dSD (D-dimensional de Sitter space) to conformal field theory on a single SD−1 ((D-1)-sphere), in which bulk de Sitters correlators with points on the boundary are related to CFT correlators on the sphere, and points on + (the future boundary of dSD) are mapped to the antipodal points on SD− 1 relative to those on − for the case of dS3, which is analyzed in some detail, the central charge of