Encyclopaedia Curvatonis

Abstract

We investigate whether the predictions of single-field models of inflation are robust under the introduction of additional scalar degrees of freedom, and whether these extra fields change the potentials for which the data show the strongest preference. We study the situation where an extra light scalar field contributes both to the total curvature perturbations and to the reheating kinematic properties. Ten reheating scenarios are identified, and all necessary formulas allowing a systematic computation of the predictions for this class of models are derived. They are implemented in the public library ASPIC, which contains more than 75 single-field potentials. This paves the way for a forthcoming full Bayesian analysis of the problem. A few representative examples are displayed and discussed.

16 pages without appendices (total 55 pages), 93 figures. matches the published version (JCAP)

References in corpus (14)

• Cosmology and Fundamental Physics with the Euclid Satellite
• Primordial trispectrum from inflation
• Non-Gaussianity, Spectral Index and Tensor Modes in Mixed Inflaton and Curvaton Models
• Curvature and isocurvature perturbations from two-field inflation in a slow-roll expansion
• A numerical study of non-gaussianity in the curvaton scenario
• Constraints on primordial non-Gaussianity from 800,000 photometric quasars
• Inflation and String Theory
• Primordial non-gaussianity from the bispectrum of 21-cm fluctuations in the dark ages
• Primordial non-Gaussianity from two curvaton decays
• How Well Can Future CMB Missions Constrain Cosmic Inflation?
• MultiModeCode: An efficient numerical solver for multifield inflation
• Optimizing future experimental probes of inflation
• Non-Gaussianity and constraints for the variance of perturbations in the curvaton model
• Bayesian evidence of the post-Planck curvaton

Cited by in corpus (58)

• The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
• No evidence for extensions to the standard cosmological model
• Early modified gravity in light of the $H_0$ tension and LSS data
• Unified framework for Early Dark Energy from $\alpha$-attractors
• Preheating after Multifield Inflation with Nonminimal Couplings, I: Covariant Formalism and Attractor Behavior
• Stochastic inflation in phase space: Is slow roll a stochastic attractor?
• Preheating after multifield inflation with nonminimal couplings, III: Dynamical spacetime results
• Resurrecting Quadratic Inflation with a non-minimal coupling to gravity
• The stochastic spectator
• $R^2$ inflation to probe non-perturbative quantum gravity
• Preheating after multifield inflation with nonminimal couplings, II: Resonance Structure
• Nonlinear Dynamics of Preheating after Multifield Inflation with Nonminimal Couplings
• Information Gain on Reheating: the One Bit Milestone
• Generating primordial features at large scales in two field models of inflation
• Reconstructing a $f(R)$ theory from the $\alpha$-Attractors
• Universality and scaling in multi-field $\alpha$-attractor preheating
• Squeezed Bispectrum in the $\delta N$ Formalism: Local Observer Effect in Field Space
• Shortcomings of New Parametrizations of Inflation
• Inflation with an extra light scalar field after Planck
• Bayesian Methods in Cosmology
• Inflation Model Selection meets Dark Radiation
• Constraining Curvatonic Reheating
• The next non-Gaussianity frontier: what can a measurement with $\sigma (f_{\mathrm{NL}})\lesssim 1$ tell us about multifield inflation?
• Slow-Roll Inflation at N3LO
• Disformally coupled inflation
• Relaxing inflation models with non-minimal coupling: A general study
• 21 cm Angular Power Spectrum from Minihalos as a Probe of Primordial Spectral Runnings
• New perturbative method for analytical solutions in single-field models of inflation
• Non-Gaussianity in multiple three-form field inflation
• Designing and testing inflationary models with Bayesian networks
• Sgoldstino-less inflation and low energy SUSY breaking
• Chameleon Field Dynamics During Inflation
• Effect of reheating on predictions following multiple-field inflation
• Strongly scale-dependent CMB dipolar asymmetry from super-curvature fluctuations
• Violation of slow-roll in non-minimal inflation
• Probing a panoply of curvaton-decay scenarios using CMB data
• CMB spectral distortions in generic two-field models
• Opening up a window on the postinflationary QCD axion
• Computing First-Passage Times with the Functional Renormalisation Group
• Structure Formation with Two Periods of Inflation: Beyond PLaIn $\Lambda$CDM
• Eternal Universes
• Sneutrinos as Mixed Inflaton and Curvaton
• Multi-chaotic inflation with and without spectator field
• Curvaton scenarios with inflaton decays into curvatons
• Double inflation via non-minimally coupled spectator
• The decisive future of inflation
• Non-Gaussianities in generalized non-local $R^2$-like inflation
• Clocking the End of Cosmic Inflation
• Higgs-like spectator field as the origin of structure
• Primordial black holes from a curvaton: the role of bimodal distributions
• Sneutrinos as two inflatons and curvaton and leptogenesis
• Viable Curvaton Models from the $f_{NL}$ Parameter
• Tilt and Tensor-to-Scalar Ratio in Multi-Scalar Field Inflation: Non-Sum-Separable Case
• Time-reversed Stochastic Inflation
• Inflation and Linear Expansion in the Radiation Dominated era in Jordan-Brans-Dicke Cosmology
• Mixed Inflaton and Spectator Field Models: CMB constraints and $\mu$ distortion
• Non-Gaussianity after many-field reheating
• Testing Inflationary Cosmology