The primordial density perturbation in the curvaton scenario

Abstract

We analyse the primordial density perturbation when it is generated by a `curvaton' field different from the inflaton. In some cases this perturbation may have large isocurvature components, fully correlated or anti-correlated with the adiabatic component. It may also have a significant non-Gaussian component. All of these effects are calculated in a form which will enable direct comparison with current and forthcoming observational data.

13 pages, latex with revtex, no figures; v2 caveat added to calculation of isocurvature perturbations in section IV; v3 minor corrections, references added, to appear in Phys Rev D

References in corpus (2)

• Non-Gaussianity in multi-field inflation
• Assisting pre-big bang phenomenology through short-lived axions

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• Running spectral index from shooting-star moduli
• Quadra-Spectrum and Quint-Spectrum from Inflation and Curvaton Models
• BAO Modulation as a Probe of Compensated Isocurvature Perturbations
• Revisiting non-Gaussianity of multiple-field inflation from the field equation
• Mixed inflaton and curvaton scenario with sneutrinos
• Extended analysis of CMB constraints on non-Gaussianity in isocurvature perturbations
• Could the next generation of cosmology experiments exclude supergravity?
• Curvaton and the inhomogeneous end of inflation
• Anisotropic Massive Gauge-flation
• Cosmological constraints on the curvaton web parameters
• Curvaton Dynamics in Brane-worlds
• Inflaton or Curvaton? Constraints on Bimodal Primordial Spectra from Mixed Perturbations
• Wigner-Eckart theorem in cosmology: Bispectra for total-angular-momentum waves
• Uncorrelated Compensated Isocurvature Perturbations from kSZ Tomography
• How the curvaton scenario, modulated reheating and an inhomogeneous end of inflation are related
• A new bound on the low reheating temperature with dark matter
• Modulated reheating by curvaton
• Adiabatic versus Isocurvature Non--Gaussianity
• Non-Gaussianity from false vacuum inflation: Old curvaton scenario
• Higgs Boson in RG running Inflationary Cosmology
• Probing new physics with multi-vacua quantum tunnelings beyond standard model through gravitational waves
• Impact of the 1/f noise and the asymmetric beam on non-Gaussianity searches with Planck
• Primordial Black Holes from Pre-Big Bang inflation
• BBN constraints on dark radiation isocurvature
• Non-Gaussian bubbles in the sky
• Non-Gaussianity and gravitational wave background in curvaton with a double well potential
• Constraints on primordial non-Gaussianity from WMAP7 and Luminous Red Galaxies power spectrum and forecast for future surveys
• Probing local non-Gaussianities within a Bayesian framework
• Computing First-Passage Times with the Functional Renormalisation Group
• A weak lensing view on primordial non-Gaussianities
• Freeze-in Dark Matter Perturbations are Adiabatic
• Fully non-linear equivalence of delta N and covariant formalisms
• Primordial Black Holes without fine-tuning from a light stochastic spectator field
• Effect of intermediate Minkowskian evolution on CMB bispectrum
• Curvaton Decay into Baryons, anti-Baryons and Radiation
• CDM/baryon isocurvature perturbations in a sneutrino curvaton model
• Non-Gaussianity in rapid-turn multi-field inflation
• Sneutrinos as Mixed Inflaton and Curvaton
• Cosmic Perturbations from a Rotating Field
• Suppressed Non-Gaussianity in the Curvaton Model
• Single-Field Inflation and the Local Ansatz: Distinguishability and Consistency
• Different approaches to the second order Klein-Gordon equation
• The Origin of the Large-Scale Structure in the Universe: Theoretical and Statistical Aspects
• Statistics of the excursion sets in models with local primordial non-Gaussianity
• Cosmological Constraints on Rapid Roll Inflation
• Inflationary parameters and primordial perturbation spectra
• An improved estimator for non-Gaussianity in cosmic microwave background observations
• Hubble induced mass after inflation in spectator field models
• Spectral Index and Non-Gaussianity in Supersymmetric Hybrid Inflation
• A falsely fat curvaton with an observable running of the spectral tilt
• Planck constraints on neutrino isocurvature density perturbations
• Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions
• Local Scale-Dependent Non-Gaussian Curvature Perturbations at Cubic Order
• Cosmological perturbations from a Spectator field during inflation
• Removing Interlopers From Intensity Mapping Probes Of Primordial Non-Gaussianity
• Revised $f_{\mathrm{NL}}$ parameter in Curvaton Scenario
• Thermal non-Gaussianity in Near-Milne universe
• Interpreting Pulsar Timing Array data of Gravitational Waves with Ekpyrosis-Bouncing Cosmology
• Curvaton scenarios with inflaton decays into curvatons
• Nambu-Goldstone Affleck-Dine Baryogenesis
• New natural shapes of non-Gaussianity from high-derivative interactions and their optimal limits from WMAP 9-year data
• Generating cosmological perturbations with mass variations
• Resolving primordial physics through correlated signatures
• Creating perturbations from a decaying field during inflation
• The TeV-mass curvaton
• Constraints on Non-Gaussianity from Sunyaev--Zeldovich Cluster Surveys
• A bulk inflaton from large volume extra dimensions
• Generation of perturbation after multi-field inflation
• Curvaton reheating in non-minimal derivative coupling to gravity: NO models
• Affleck-Dine baryogenesis with modulated reheating
• The running curvaton
• Isocurvature initial conditions for second order Boltzmann solvers
• Refined Study of Isocurvature Fluctuations in the Curvaton Scenario
• The moduli problem at the perturbative level
• Mimetic Curvaton
• Density perturbations from both the inflaton and the curvaton
• Radiative corrections to scalar masses in de Sitter space
• What We Can Learn from the Running of the Spectral Index if no Tensors are Detected in the Cosmic Microwave Background Anisotropy
• Isocurvature modes: joint analysis of the CMB power spectrum and bispectrum
• Detecting the dark sector through scalar-induced gravitational waves
• Probing Lepton Asymmetry with 21 cm Fluctuations
• The Effect of Curvaton Decay on the Primordial Power Spectrum
• Volume Weighting the Measure of the Universe from Classical Slow-Roll Expansion
• Lensing Bias to CMB Polarization Measurements of Compensated Isocurvature Perturbations
• Adiabatic and non-adiabatic perturbations for loop quantum cosmology
• Non-Gaussian assembly bias from a semi-analytic galaxy formation model
• Axion-CMB Scenario in Supercooled Universe
• Magnetic Fields from Compensated Isocurvature Perturbations
• The interplay of CMB temperature lensing power reconstruction with primordial non-Gaussianity of local type
• Entropy production and curvature perturbation from dissipative curvatons
• Cosmic perturbations, baryon asymmetry and dark matter from the minimal supersymmetric standard model
• Non-Gaussianities and Primordial Black Holes
• Affleck-Dine baryogenesis in inflating curvaton scenario with O($10-10^2$TeV) mass moduli curvaton
• Theories of gravity with nonminimal matter-curvature coupling and the de Sitter swampland conjectures
• A maximal-entropy initial state of the Universe as a microscopic description of inflation
• Primordial black holes from the ultraslow-roll phase in the inflaton--curvaton mixed field inflation
• Curvaton and quantum gravity effect on the tensor to scalar ratio of the chaotic inflation
• Primordial black holes save $R^2$ inflation
• Non-gaussianity and Statistical Anisotropy in Cosmological Inflationary Models
• Primordial non-Gaussianity estimator: the inhomogeneous noise effect
• Compactification driven Hilltop Inflation in Einstein-Yang-Mills
• Warm Ekpyrosis
• Thermal Inflation with a Thermal Waterfall Scalar Field Coupled to a Light Spectator Scalar Field
• CMB lensing forecasts for constraining the primordial perturbations: adding to the CMB temperature and polarization information
• The quantum origin of cosmic structure: theory and observations
• SuperCool Inflation: A Graceful Exit from Eternal Inflation at LHC Scales and Below
• Mixed perturbations from an Inflaton and Two Curvatons - towards understanding non-gaussianity in more complicated curvaton scenarios
• Primordial black holes from a curvaton: the role of bimodal distributions
• f(R) in Holographic and Agegraphic Dark Energy Models and the Generalized Uncertainty Principle
• Zonal Modes of Cosmic Microwave Background Temperature Maps
• Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton
• Flat Direction Dynamics in a Non-Topological Soliton-Dominated Universe
• Stabilising the Planck mass shortly after inflation
• QCD Axions and CMB Anisotropy
• Sneutrinos as two inflatons and curvaton and leptogenesis
• Viable Curvaton Models from the $f_{NL}$ Parameter
• Curvature perturbations from kinetic preheating after $\alpha$-attractor inflation
• The Quantum Phase of Inflation
• Suppression of the large scale curvature perturbation by interacting fluids
• Curvaton: Perturbations and reheating
• Constraints on the three-fluid model of curvaton decay
• Cosmological correlation functions in scalar and vector inflationary models
• Curvaton decay into relativistic matter
• Right-Handed Sneutrino Curvaton and non-Gaussianity
• Possible origin of CMB temperature fluctuations: Vacuum fluctuations of Kaluza-Klein and string states during inflationary era
• Cosmic inflation in non-perturbative quantum gravity
• Spectator fields and their imprints on the Cosmic Microwave Background
• Curvaton mechanism and its implications to sneutrino cosmology
• The shape of high order correlation functions in CMB anisotropy maps
• Measuring CMB non-Gaussianity as a probe of Inflation and Cosmic Strings
• Non-linear effects in early Universe cosmology
• Constraining primordial non-Gaussianity using Neural Networks
• Comprehensive analysis of dissipative effects in the induced gravitational waves
• Forecasting isocurvature models with CMB lensing information: axion and curvaton scenarios
• Gravity of Cosmological Perturbations in the CMB
• Generalized neutrino isocurvature
• Curvature perturbations from vacuum transition during inflation
• Probing Dark Matter Isocurvature with Primordial Non-Gaussianity
• On the four-dimensional effective theories in brane-worlds
• Hidden in the background: a local approach to CMB anomalies
• Non-Gaussianity after many-field reheating
• Inhomogeneous Reheating Scenario with DBI fields
• Cosmic voids and BAO with relative baryon-CDM perturbations
• Unified Origin of Curvature Perturbation and Baryon Asymmetry of the Universe
• Primordial non-Gaussianity systematics from redshift mismatch with SPHEREx
• Testing Inflationary Cosmology
• Primordial Fluctuations in String Cosmology
• Searching for dark matter isocurvature initial conditions with N-body Simulations