Gravitational Wave Background and Non-Gaussianity as a Probe of the Curvaton Scenario

Abstract

We study observational implications of the stochastic gravitational wave background and a non-Gaussian feature of scalar perturbations on the curvaton mechanism of the generation of density/curvature fluctuations, and show that they can determine the properties of the curvaton in a complementary manner to each other. Therefore even if Planck could not detect any non-Gaussianity, future space-based laser interferometers such as DECIGO or BBO could practically exhaust its parameter space.

16 pages, 2 figures

References in corpus (28)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Inflationary Cosmology
• CMBPol Mission Concept Study: Probing Inflation with CMB Polarization
• Improved Calculation of the Primordial Gravitational Wave Spectrum in the Standard Model
• Relating gravitational wave constraints from primordial nucleosynthesis, pulsar timing, laser interferometers, and the CMB: implications for the early universe
• Probing reheating temperature of the universe with gravitational wave background
• Non-Gaussianity, Spectral Index and Tensor Modes in Mixed Inflaton and Curvaton Models
• Precision calculations of the gravitational wave background spectrum from inflation
• A numerical study of non-gaussianity in the curvaton scenario
• Prospects for direct detection of primordial gravitational waves
• Relic gravitational waves and their detection
• Primordial Non-Gaussianity in Multi-Scalar Slow-Roll Inflation
• Space laser interferometers can determine the thermal history of the early Universe
• Curvaton Dynamics and the Non-Linearity Parameters in Curvaton Model
• Large Non-Gaussianity Implication for Curvaton Scenario
• The impact of cosmic neutrinos on the gravitational-wave background
• Isocurvature, non-gaussianity and the curvaton model
• Limits on Isocurvature Perturbations from Non-Gaussianity in WMAP Temperature Anisotropies
• Hilltop Non-Gaussianity
• The inflationary gravitational-wave background and measurements of the scalar spectral index
• Non-Gaussianity from Baryon Asymmetry
• The Search For Primordial Tensor Modes
• N-vaton
• Effect of Background Evolution on the Curvaton Non-Gaussianity
• WMAP-normalized Inflationary Model Predictions and the Search for Primordial Gravitational Waves with Direct Detection Experiments
• Detectability of CMB tensor B modes via delensing with weak lensing galaxy surveys
• Effective Search Templates for a Primordial Stochastic Gravitational Wave Background
• The R-axion and non-Gaussianity

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• Imprint of a scalar era on the primordial spectrum of gravitational waves
• Probing dark radiation with inflationary gravitational waves
• Constraints on the Reheating Parameters after Gauss-Bonnet Inflation from the Primordial Gravitational Waves
• Fingerprint of GeV scale right-handed neutrinos on inflationary gravitational waves and PTA data
• Gravitational waves from kinks on infinite cosmic strings
• Non-Gaussianity and Gravitational Waves from Quadratic and Self-interacting Curvaton
• Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
• Tomography of flavoured leptogenesis with primordial blue gravitational waves
• Non-Gaussianity and gravitational wave background in curvaton with a double well potential
• Prospecting bipartite Dark Matter through Gravitational Waves
• New features in curvaton model
• Axion-CMB Scenario in Supercooled Universe
• Electroweak Phase Transition, Gravitational Waves and Collider Probes in Multi-Scalar Dark Matter Scenarios
• The Stochastic Gravitational Wave Background from the Single-Degenerate Channel of Type Ia Supernovae
• QCD Axions and CMB Anisotropy
• Revisiting Singlet Fermion Dark Matter with a Scalar Portal: Connecting Higgs Phenomenology and Strong Electroweak Phase Transition
• Complementary signatures of $\alpha -$attractor inflation in CMB and cosmic string Gravitational Waves
• Axion Dark Matter Archaeology with Primordial Gravitational Waves