Effects of Cosmological Moduli Fields on Cosmic Microwave Background

Abstract

We discuss effects of cosmological moduli fields on the cosmic microwave background (CMB). If a modulus field ϕonce dominates the universe, the CMB we observe today is from the decay of ϕand its anisotropy is affected by the primordial fluctuation in the amplitude of the modulus field. Consequently, constraints on the inflaton potential from the CMB anisotropy can be relaxed. In particular, the scale of the inflation may be significantly lowered. In addition, with the cosmological moduli fields, correlated mixture of adiabatic and isocurvature fluctuations may be generated, which results in enhanced CMB angular power spectrum at higher multipoles relative to that of lower ones. Such an enhancement can be an evidence of the cosmological moduli fields, and may be observed in future satellite experiments.

11pages, 4 figures, numerical error corrected

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• Oscillations During Inflation and the Cosmological Density Perturbations

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• Non-Gaussianity of a single scalar field in general covariant Hořava-Lifshitz gravity
• Inhomogeneous reheating scenario with low scale inflation and/or MSSM flat directions
• Isocurvature perturbations and tensor mode in light of Planck and BICEP2
• The probability distribution for non-Gaussianity estimators constructed from the CMB trispectrum
• Spotted Inflation
• Effects of Light Fields During Inflation
• Chaotic inflation in supergravity and cosmic string production
• Curvature Perturbation from Supersymmetric Flat Directions
• Statistics of general functions of a Gaussian field -application to non-Gaussianity from preheating-
• Low Scale Inflation at High Energy Colliders and Meson Factories
• Constraining the WMAP9 bispectrum and trispectrum with needlets
• Strong dynamics at the Planck scale as a solution to the cosmological moduli problem
• Delta-N formalism for the evolution of the curvature perturbations in generalized multi-field inflation
• Violation of slow-roll in non-minimal inflation
• Nonlinear superhorizon perturbations of non-canonical scalar field
• Probing a panoply of curvaton-decay scenarios using CMB data
• On the possibility of braneworld quintessential inflation
• Modulated decay in the multi-component Universe
• Modular thermal inflation without slow-roll approximation
• Cosmologies from higher-order string corrections
• Running spectral index from shooting-star moduli
• Entropy Fluctuations in Brane Inflation Models
• The lessons from the running of the tensor-to-scalar ratio
• Remote Inflation: Hybrid-like inflation without hybrid-type potential
• Curvatons in Warped Throats
• Hybrid Curvatons from Broken Symmetry
• "Phantom" Inflation in Warped Compactification
• Cosmology with the Square Kilometre Array by SKA-Japan
• Mixed inflaton and curvaton scenario with sneutrinos
• Inflaton or Curvaton? Constraints on Bimodal Primordial Spectra from Mixed Perturbations
• Gravitational-wave background in bouncing models from semi-classical, quantum and string gravity
• Extended analysis of CMB constraints on non-Gaussianity in isocurvature perturbations
• Bayesian evidence of the post-Planck curvaton
• From heaviness to lightness during inflation
• A new bound on the low reheating temperature with dark matter
• Cosmological constraints on the curvaton web parameters
• Exploring Two-Field Inflation in the Wess-Zumino Model
• Wigner-Eckart theorem in cosmology: Bispectra for total-angular-momentum waves
• Identifying the inflaton with primordial gravitational waves
• Hubble-induced mass from MSSM plasma
• Curvaton and the inhomogeneous end of inflation
• Multiple spectator condensates from inflation
• Remarks on Hubble Induced Mass from Fermion Kinetic Term
• What Planck does not tell us about inflation
• Modulated preheating and isocurvature perturbations
• Modulated reheating by curvaton
• Curvaton Dynamics Revisited
• Mixed non-Gaussianity in multiple-DBI inflation
• Modulated inflation from kinetic term
• Heavy Particles from Inflation
• Evolution of curvature perturbation in generalized gravity theories
• Low scale inflation and the immediate heavy curvaton decay
• Non-Gaussianity from false vacuum inflation: Old curvaton scenario
• Opening up a window on the postinflationary QCD axion
• Effective Search Templates for a Primordial Stochastic Gravitational Wave Background
• Computing First-Passage Times with the Functional Renormalisation Group
• The Revival of Cosmic Strings
• Modification of the halo mass function by kurtosis associated with primordial non-Gaussianity
• Curvaton model completed
• Remote Inflation as hybrid-like sneutrino/MSSM inflation
• Non-Gaussianity and gravitational wave background in curvaton with a double well potential
• Non-Gaussian bubbles in the sky
• Electrically charged curvaton
• New features in curvaton model
• Cosmological data and indications for new physics
• Probing local non-Gaussianities within a Bayesian framework
• Coupling structure of multi-field primordial perturbations
• CDM/baryon isocurvature perturbations in a sneutrino curvaton model
• Dynamics of Cosmological Perturbations in Multi-Speed Inflation
• Alchemical Inflation: inflaton turns into Higgs
• Large Tensor-to-Scalar Ratio in Small-Field Inflation
• Radiative Corrections from Heavy Fast-Roll Fields during Inflation
• Hemispherical Power Asymmetry of the Cosmic Microwave Background from a Remnant of a pre-Inflationary Topological Defect
• Fully non-linear equivalence of delta N and covariant formalisms
• Constraints from CMB in the intermediate Brans-Dicke inflation
• Cosmic Perturbations from a Rotating Field
• Structure Formation with Two Periods of Inflation: Beyond PLaIn $\Lambda$CDM
• Effect of intermediate Minkowskian evolution on CMB bispectrum
• Quintessential Isocurvature in Separate Universe Simulations
• Cosmic Degeneracies III: N-body Simulations of Interacting Dark Energy with Non-Gaussian Initial Conditions
• Quantum collapse as source of the seeds of cosmic structure during the radiation era
• Curvaton Decay into Baryons, anti-Baryons and Radiation
• Light cold dark matter from non-thermal decay
• Minimal solution to the axion isocurvature problem from a nonminimal coupling
• Relaxation leptogenesis, isocurvature perturbations, and the cosmic infrared background
• Particle Production during Inflation in Light of PLANCK
• Eternal Universes
• Spectral Index and Non-Gaussianity in Supersymmetric Hybrid Inflation
• Smallness of Baryon Asymmetry from Split Supersymmetry
• Suppressed Non-Gaussianity in the Curvaton Model
• Isocurvature Fluctuations Induce Early Star Formation
• Conformal Universe as false vacuum decay
• Multi-chaotic inflation with and without spectator field
• Hubble induced mass after inflation in spectator field models
• Spontaneous Baryogenesis without Baryon Isocurvature
• A falsely fat curvaton with an observable running of the spectral tilt
• Curvaton Potential Terms, Scale-Dependent Perturbation Spectra and Chaotic Initial Conditions
• Cosmological Constraints on Rapid Roll Inflation
• Inflationary parameters and primordial perturbation spectra
• BICEP2, the curvature perturbation and supersymmetry
• Thermal blocking of preheating
• Braneworld Flux Inflation
• Curvaton preheating revisited
• Generating cosmological perturbations with mass variations
• The TeV-mass curvaton
• Inflationary Solution to the Strong CP and $\mu$ Problems
• Cosmological perturbations from a Spectator field during inflation
• Covariant second-order perturbations in generalized two-field inflation
• Creating perturbations from a decaying field during inflation
• Curvature Perturbation and Domain Wall Formation with Pseudo Scaling Scalar Dynamics
• Liberating the Inflaton from Primordial Spectrum Constraints
• Nambu-Goldstone Affleck-Dine Baryogenesis
• Towards a warped inflationary brane scanning
• Revised $f_{\mathrm{NL}}$ parameter in Curvaton Scenario
• Resolving primordial physics through correlated signatures
• Generation of perturbation after multi-field inflation
• Axionlike Origin of the Primordial Density Perturbation
• On the initial regime of pre-big bang cosmology
• A forecast for the detection of the power asymmetry from galaxy surveys
• Curvaton scenarios with inflaton decays into curvatons
• Curvatons and inhomogeneous scenarios with deviation from slow-roll
• Thermal Effects and Sudden Decay Approximation in the Curvaton Scenario
• Affleck-Dine baryogenesis with modulated reheating
• A new perspective on supersymmetric inflation
• Higher moments of primordial non-Gaussianity and N-body simulations
• Candidates for Inflaton in Quiver Gauge Theory
• Refined Study of Isocurvature Fluctuations in the Curvaton Scenario
• Cosmological Perturbations During Radion Stabilization
• I-ball formation with logarithmic potential
• Consequences of a stochastic approach to the conformal invariance of inflationary correlators
• The moduli problem at the perturbative level
• What We Can Learn from the Running of the Spectral Index if no Tensors are Detected in the Cosmic Microwave Background Anisotropy
• Density perturbations from both the inflaton and the curvaton
• Supersymmetric Models For Gauge Inflation
• Double inflation via non-minimally coupled spectator
• The Effect of Curvaton Decay on the Primordial Power Spectrum
• Inflation as de Sitter instability
• Implications for Pulsar Timing Arrays of Sub-solar Black Hole Detections: From LVK to Einstein Telescope and Cosmic Explorer
• Conformal Inflation, Modulated Reheating, and WMAP5
• Entropy production and curvature perturbation from dissipative curvatons
• Delta-N Formalism for Curvaton with Modulated Decay
• Cosmic perturbations, baryon asymmetry and dark matter from the minimal supersymmetric standard model
• Adiabatic and non-adiabatic perturbations for loop quantum cosmology
• Metric fluctuations and its evolution during inflation
• Aspects of warm-flat directions
• Affleck-Dine baryogenesis in inflating curvaton scenario with O($10-10^2$TeV) mass moduli curvaton
• Non-Gaussianities and Primordial Black Holes
• Axion-CMB Scenario in Supercooled Universe
• Primordial black holes from the ultraslow-roll phase in the inflaton--curvaton mixed field inflation
• Broken scale invariance, $\alpha$-attractors and vector impurity
• A model of cosmology and particle physics at an intermediate scale
• Scale dependences of local form non-Gaussianity parameters from a DBI isocurvature field
• Curvature perturbation from velocity modulation
• Non-Gaussianity from two right-handed sneutrino curvaton decays
• Theories of gravity with nonminimal matter-curvature coupling and the de Sitter swampland conjectures
• Consistency relation for the Lorentz invariant single-field inflation
• Primordial black holes save $R^2$ inflation
• On Primordial Perturbations of Test Scalar Fields
• Supersymmetric hybrid inflation with a light scalar
• Gauged Inflation
• CMB lensing forecasts for constraining the primordial perturbations: adding to the CMB temperature and polarization information
• Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton
• Thermodynamic gauge-theory cascade
• Compactification driven Hilltop Inflation in Einstein-Yang-Mills
• Primordial black holes from a curvaton: the role of bimodal distributions
• Spectral index and running of $g_{NL}$ from an isocurvature scalar field
• Escape from the swamp with spectator
• The quantum origin of cosmic structure: theory and observations
• Quantifying the 'naturalness' of the curvaton model
• Constrained Superfields in Dynamical Background
• Reheating dynamics affects non-perturbative decay of spectator fields
• Curvaton mechanism after multi-field inflation
• Cosmic acceleration in models with density dependent moduli
• $g_{\mathrm{NL}}$ in the curvaton model constrained by PLANCK
• Spacetime evolution during moduli stabilization in radiation dominated era beyond 4D effective theory
• QCD Axions and CMB Anisotropy
• Flat Direction Dynamics in a Non-Topological Soliton-Dominated Universe
• Enlarging the Space of Viable Inflation Models: A Slingshot Mechanism
• Curvaton decay into relativistic matter
• Where does curvaton reside? Differences between bulk and brane frames
• The Quantum Phase of Inflation
• The interplay between high energy physics and cosmology: an example
• Suppression of the large scale curvature perturbation by interacting fluids
• Stabilising the Planck mass shortly after inflation
• Application of beyond $\delta N$ formalism -- Varying sound speed
• Quenching preheating by light fields
• Possible origin of CMB temperature fluctuations: Vacuum fluctuations of Kaluza-Klein and string states during inflationary era
• Right-Handed Sneutrino Curvaton and non-Gaussianity
• Inflationary cross-correlations of a non-minimal spectator and their soft limits
• Planck isocurvature constraint on primordial black holes lighter than a kiloton
• Curvature perturbations from vacuum transition during inflation
• Tilt and Tensor-to-Scalar Ratio in Multi-Scalar Field Inflation: Non-Sum-Separable Case
• The shape of high order correlation functions in CMB anisotropy maps
• Mixed Inflaton and Spectator Field Models: CMB constraints and $\mu$ distortion
• Curvature perturbations from preheating with scale dependence
• Probing Dark Matter Isocurvature with Primordial Non-Gaussianity
• Curvaton mechanism and its implications to sneutrino cosmology
• Anisotropic multiple bounce models
• Pseudo-conformal Universe: late-time contraction and generation of tensor modes
• Passive Curvaton
• Non-Gaussianity after many-field reheating
• Inhomogeneous Reheating Scenario with DBI fields
• Sustainability of multi-field inflation and bound on string scale
• On the space of non-Gaussian fields with single-clock bispectra
• Higher order non-linear parameters with PLANCK
• Towards an analytic solution of rapid roll inflation with a quartic potential
• Kinematically Blocked Curvaton