Large anisotropies of the stochastic gravitational wave background from cosmic domain walls

Abstract

We investigate the stochastic gravitational wave background (SGWB) from cosmic domain walls (DWs) caused by quantum fluctuations of a light scalar field $\varphi$ during inflation. Perturbations of $\varphi$ remain almost constant after leaving the Hubble horizon. The probabilities of the two domains depend on the averaged value of $\varphi$ at each large scale region, leading to large scale perturbations of DW energy density and large anisotropies in the SGWB. We find that the angular power spectrum is scale-invariant and at least of the order of $10^{-2}$, which is expected to be detected by future gravitational-wave (GW) detectors. Since we have not detected primordial GWs yet, anisotropies of the SGWB could help us to verify the rationality of inflation and determine the energy scale of inflation.

arXiv comment6 pages, 2 figures

References in corpus (56)

• Advanced LIGO
• Planck 2018 results. X. Constraints on inflation
• Laser Interferometer Space Antenna
• Monodromy in the CMB: Gravity Waves and String Inflation
• Adiabatic CMB perturbations in pre-big bang string cosmology
• Effects of Cosmological Moduli Fields on Cosmic Microwave Background
• The primordial density perturbation in the curvaton scenario
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
• The cosmological gravitational wave background from primordial density perturbations
• Taiji Program: Gravitational-Wave Sources
• Semianalytic Calculation of Gravitational Wave Spectrum Nonlinearly Induced from Primordial Curvature Perturbations
• Detector configuration of DECIGO/BBO and identification of cosmological neutron-star binaries
• Gravitational Waves Induced by non-Gaussian Scalar Perturbations
• A Natural Framework for Chaotic Inflation
• A Cosmological Signature of the SM Higgs Instability: Gravitational Waves
• Science with the Square Kilometer Array: Motivation, Key Science Projects, Standards and Assumptions
• Relic gravitational waves produced after preheating
• NANOGrav Hints to Primordial Black Holes as Dark Matter
• Trans-Planckian Censorship and the Swampland
• Cosmic String Interpretation of NANOGrav Pulsar Timing Data
• Probing the gravitational wave background from cosmic strings with LISA
• Has NANOGrav found first evidence for cosmic strings?
• The cosmological Higgstory of the vacuum instability
• Did NANOGrav see a signal from primordial black hole formation?
• The Formation of Primary Galactic Nuclei during Phase Transitions in the Early Universe
• On the estimation of gravitational wave spectrum from cosmic domain walls
• Primordial Structure of Massive Black Hole Clusters
• A review of gravitational waves from cosmic domain walls
• The Gravitational-Wave Physics
• Detection of Anisotropies in the Gravitational-Wave Stochastic Background
• Anisotropies and non-Gaussianity of the Cosmological Gravitational Wave Background
• Gravitational Waves from Collapsing Domain Walls
• Anisotropies of Gravitational Wave Backgrounds: A Line Of Sight Approach
• Primordial Anisotropies in the Gravitational Wave Background from Cosmological Phase Transitions
• Characterizing the Cosmological Gravitational Wave Background Anisotropies and non-Gaussianity
• Anisotropies in the stochastic gravitational-wave background: Formalism and the cosmic string case
• The gravitational waves from the first-order phase transition with a dimension-six operator
• Gravitational Waves from Oscillons with Cuspy Potentials
• Anisotropies in the Gravitational Wave Background from Preheating
• The Inflationary Energy Scale
• The Imprint of Relativistic Particles on the Anisotropies of the Stochastic Gravitational-Wave Background
• Quality of the Peccei-Quinn symmetry in the Aligned QCD Axion and Cosmological Implications
• Universal Upper Bound on the Inflationary Energy Scale from the Trans-Planckian Censorship Conjecture
• On the Anisotropy of the Gravitational Wave Background from Massless Preheating
• The $N_{\ell }$ of gravitational wave background experiments
• Discrete R Symmetries and Domain Walls
• The search for anisotropy in the gravitational-wave background with pulsar-timing arrays
• Gravitational Waves from first-order phase transition and domain wall
• Axion domain wall baryogenesis
• LISA Measurement of Gravitational Wave Background Anisotropy: Hexadecapole Moment via a Correlation Analysis
• Gravitational Waves as a Probe of the Gravitino Mass
• Domain walls and gravitational waves in the Standard Model
• Gravitational waves from Higgs domain walls
• Gravitational Waves from Axion Monodromy
• Observational constraints on the energy scale of inflation

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• Primordial gravitational waves from NANOGrav: a broken power-law approach
• The Gravitational-Wave Physics II: Progress
• Primordial black holes and stochastic gravitational wave background from inflation with a noncanonical spectator field
• Looking at the NANOGrav Signal Through the Anthropic Window of Axion-Like Particles
• Can we observe the QCD phase transition-generated gravitational waves through pulsar timing arrays?
• Primordial Non-Gaussianity $f_{\mathrm{NL}}$ and Anisotropies in Scalar-Induced Gravitational Waves
• Intermittent null energy condition violations during inflation and primordial gravitational waves
• Escape from supercooling with or without bubbles: gravitational wave signatures
• Complete analysis of the background and anisotropies of scalar-induced gravitational waves: primordial non-Gaussianity $f_{\mathrm{NL}}$ and $g_{\mathrm{NL}}$ considered
• NANOGrav Hints on Planet-Mass Primordial Black Holes
• Generating enhanced parity-violating gravitational waves during inflation with violation of the null energy condition
• Primordial magnetic field as a common solution of nanohertz gravitational waves and the Hubble tension
• Pulsar Timing Residual induced by Wideband Ultralight Dark Matter with Spin 0, 1, 2
• Anisotropy of phase transition gravitational wave and its implication for primordial seeds of the Universe
• Anisotropies in Scalar-Induced Gravitational-Wave Background from Inflaton-Curvaton Mixed Scenario with Sound Speed Resonance
• Enhanced curvature perturbations from spherical domain walls nucleated during inflation
• Timing-residual power spectrum of a polarized stochastic gravitational-wave background in pulsar-timing-array observation
• Stochastic gravitational wave background due to gravitational wave memory
• Impact of combinations of time-delay interferometry channels on stochastic gravitational wave background detection
• Scalar induced gravitational waves review
• Anisotropies of cosmological gravitational wave backgrounds in non-flat spacetime
• Measuring the anisotropies in astrophysical and cosmological gravitational-wave backgrounds with Taiji and LISA networks
• Gravitational wave background discovered by NANOGrav as evidence of a cyclic universe
• Searching for Anisotropy in the Gravitational Wave Background Using the Parkes Pulsar Timing Array
• Gravitational wave signal from primordial magnetic fields in the Pulsar Timing Array frequency band
• Estimating the gravitational wave background anisotropy: a Bayesian approach boosted by cross-correlation angular power spectrum