Probing the Universe through the Stochastic Gravitational Wave Background

Abstract

Stochastic gravitational wave backgrounds, predicted in many models of the early universe and also generated by various astrophysical processes, are a powerful probe of the Universe. The spectral shape is key information to distinguish the origin of the background since different production mechanisms predict different shapes of the spectrum. In this paper, we investigate how precisely future gravitational wave detectors can determine the spectral shape using single and broken power-law templates. We consider the detector network of Advanced-LIGO, Advanced-Virgo and KAGRA and the space-based gravitational-wave detector DECIGO, and estimate the parameter space which could be explored by these detectors. We find that, when the spectrum changes its slope in the frequency range of the sensitivity, the broken power-law templates dramatically improve the ${\chi }^2$ fit compared with the single power-law templates and help to measure the shape with a good precision.

45 pages, 20 figures

References in corpus (34)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Cosmological Backgrounds of Gravitational Waves
• Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
• Gravitational Wave Production by Collisions: More Bubbles
• Reheating in Inflationary Cosmology: Theory and Applications
• Semianalytic Calculation of Gravitational Wave Spectrum Nonlinearly Induced from Primordial Curvature Perturbations
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• Science with the space-based interferometer LISA. IV: Probing inflation with gravitational waves
• Gravitational Waves from Phase Transitions at the Electroweak Scale and Beyond
• A Cosmological Signature of the SM Higgs Instability: Gravitational Waves
• Gravitational wave generation from bubble collisions in first-order phase transitions: an analytic approach
• Large Nongaussianity in Axion Inflation
• Gravitational wave stochastic background from cosmic (super)strings
• Gravitational waves from stochastic relativistic sources: primordial turbulence and magnetic fields
• Gravitational-Wave Stochastic Background from Kinks and Cusps on Cosmic Strings
• A stochastic background of gravitational waves from hybrid preheating
• Stochastic gravitational wave background from smoothed cosmic string loops
• Stochastic and resolvable gravitational waves from ultralight bosons
• Probing non-tensorial polarizations of stochastic gravitational-wave backgrounds with ground-based laser interferometers
• Probing reheating temperature of the universe with gravitational wave background
• Primordial Gravitational Waves from Axion-Gauge Fields Dynamics
• Gravitational Waves from Abelian Gauge Fields and Cosmic Strings at Preheating
• Model Discrimination in Gravitational Wave spectra from Dark Phase Transitions
• Exact Scale-Invariant Background of Gravitational Waves from Cosmic Defects
• Gravitational waves from gauge preheating
• Observable Spectra of Induced Gravitational Waves from Inflation
• Blue-tilted Tensor Spectrum and Thermal History of the Universe
• First predictions of the angular power spectrum of the astrophysical gravitational wave background
• Stochastic gravitational waves from cosmic string loops in scaling
• Stochastic Gravitational Wave Background from Light Cosmic Strings
• Gravitational wave production from preheating: parameter dependence
• A Nearly Scale Invariant Spectrum of Gravitational Radiation from Global Phase Transitions
• Stochastic Gravitational Wave Background from Neutron Star r-mode Instability Revisited
• Non-Gaussianity test for discriminating gravitational wave backgrounds around 0.1-1Hz

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• Induced gravitational waves as a probe of thermal history of the universe
• Gravitational Waves Induced by Scalar Perturbations during a Gradual Transition from an Early Matter Era to the Radiation Era
• Primordial black holes and secondary gravitational waves from k/G inflation
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• Ability of LIGO and LISA to probe the equation of state of the early Universe
• Primordial Gravitational Waves in Nonstandard Cosmologies
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• Probing non-Gaussianities with the high frequency tail of induced gravitational waves
• Gravitational Waves from Global Cosmic Strings and Cosmic Archaeology
• Gravitational Wave and CMB Probes of Axion Kination
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• An analytical approximation of the scalar spectrum in the ultra-slow-roll inflationary models
• Have pulsar timing array methods detected a cosmological phase transition?
• Decoding the phases of early and late time reheating through imprints on primordial gravitational waves
• On the slope of curvature power spectrum in non-attractor inflation
• Constraints on primordial curvature perturbations from primordial black hole dark matter and secondary gravitational waves
• Fingerprinting models of first-order phase transitions by the synergy between collider and gravitational-wave experiments
• Imprint of a scalar era on the primordial spectrum of gravitational waves
• Gravitational Waves from Fundamental Axion Dynamics
• Simultaneous estimation of astrophysical and cosmological stochastic gravitational-wave backgrounds with terrestrial detectors
• Primordial gravitational waves and the H0-tension problem
• Primordial black holes and scalar induced gravitational waves from the $E$ model with a Gauss-Bonnet term
• Probing pre-Recombination Physics by the Cross-Correlation of Stochastic Gravitational Waves and CMB Anisotropies
• Maximum likelihood map-making with the Laser Interferometer Space Antenna
• Primordial black holes and induced gravitational waves in $k$-inflation
• Gravitational Waves from Density Perturbations in an Early Matter Domination Era
• Double-peaked inflation model: Scalar induced gravitational waves and primordial-black-hole suppression from primordial non-Gaussianity
• Using a Primordial Gravitational Wave Background to Illuminate New Physics
• Non-Gaussianity and Secondary Gravitational Waves from Primordial Black Holes Production in $\alpha$-attractor Inflation
• Exploring the Spectral Shape of Gravitational Waves Induced by Primordial Scalar Perturbations and Connection with the Primordial Black Hole Scenarios
• Precision cosmology and the stiff-amplified gravitational-wave background from inflation: NANOGrav, Advanced LIGO-Virgo and the Hubble tension
• Primordial black holes formation in the inflationary model with field-dependent kinetic term for quartic and natural potentials
• The stochastic gravitational wave background from close hyperbolic encounters of primordial black holes in dense clusters
• LISA Sensitivity to Gravitational Waves from Sound Waves
• Primordial black holes ensued from exponential potential and coupling parameter in nonminimal derivative inflation model
• Primordial black holes in non-canonical scalar field inflation driven by quartic potential in the presence of bump
• Primordial black holes and secondary gravitational waves from generalized power-law non-canonical inflation with quartic potential
• Signatures of Non-thermal Dark Matter with Kination and Early Matter Domination: Gravitational Waves versus Laboratory Searches
• Doppler boosting the stochastic gravitational wave background
• New universal property of cosmological gravitational wave anisotropies
• Mechanism of primordial black holes production and secondary gravitational waves in $\alpha$-attractor Galileon inflationary scenario
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• Circularly polarized scalar induced gravitational waves from the Chern-Simons modified gravity
• Astrophysical neutrino oscillations after pulsar timing array analyses
• Primordial black holes in scalar field inflation coupled to the Gauss-Bonnet term with fractional power-law potentials
• Primordial black holes generated by fast-roll mechanism in non-canonical natural inflation
• Charactering instrumental noises and stochastic gravitational wave signals from combined time-delay interferometry
• Enhanced primordial gravitational waves from a stiff post-inflationary era due to an oscillating inflaton
• Scalar induced gravitational waves from Chern-Simons gravity during inflation era
• Scalar induced gravitational waves in metric teleparallel gravity with the Nieh-Yan term
• Scalar induced gravitational waves in symmetric teleparallel gravity with a parity-violating term
• Gravitational-wave background in bouncing models from semi-classical, quantum and string gravity
• The rise of the primordial tensor spectrum from an early scalar-tensor epoch
• On the response of the Einstein Telescope to Doppler anisotropies
• Parameter Estimation for Tests of General Relativity with the Astrophysical Stochastic Gravitational Wave Background
• Measuring the maximally allowed polarization states of the isotropic stochastic gravitational wave background with the ground-based detectors
• Distinguishing a stochastic gravitational-wave signal from correlated noise with joint parameter estimation: Fisher analysis for ground-based detectors
• Scalar induced gravitational waves in chiral scalar-tensor theory of gravity
• A universal bound on the duration of a kination era
• Scalar induced gravitational waves review
• Alternative LISA-TAIJI networks: Detectability of the Parity Violation in Stochastic Gravitational Wave Background
• Detectability of the chiral gravitational wave background from audible axions with the LISA-Taiji network
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• Primordial black holes in SB SUSY Gauss-Bonnet inflation
• On the anisotropies of the cosmological gravitational-wave background from pulsar timing array observations
• Polarization Properties of the Electromagnetic Response to High-frequency Gravitational Wave
• Scalar-induced gravitational waves in spatially covariant gravity
• Cosmic Strings-induced CMB anisotropies in light of Weighted Morphology
• The constraints on the stochastic gravitational wave background from cosmic strings by an electromagnetic resonance system
• Gravitational wave energy spectral density properties from BPASS Galactic binary population in the Milky Way galaxy
• SageNet: Fast Neural Network Emulation of the Stiff-amplified Gravitational Waves from Inflation
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