Prospects for direct detection of primordial gravitational waves

Abstract

We study the primordial gravitational wave background produced in models of single field inflation. Using the inflationary flow approach, we investigate the amplitude of gravitational wave spectrum in the frequency range 1 mHz - 1 Hz pertinent to future space-based laser interferometers. For models that satisfy the current observational constraint on the tensor-to-scalar ratio, r<0.36, we derive a strict upper bound of omega_{gw}<1.6 x 10^{-15}, independent of the form of the inflationary potential. Applying, in addition, the observational constraints on the spectral index and its running, omega_{gw} is expected to be considerably lower than this bound unless the shape of the potential is finely tuned. We contrast our numerical results with those based on simple power-law extrapolation of the tensor power spectrum from CMB scales. In addition to single field inflation, we summarise a number of other possible cosmological sources of primordial gravitational waves and assess what might be learnt from direct detection experiments such as LISA, Big Bang Observer and beyond.

arXiv comment11 pages, 3 figures. Minor amendments. Accepted by Phys. Rev. D

References in corpus (67)

• A Large Mass Hierarchy from a Small Extra Dimension
• An Alternative to Compactification
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• Cosmic strings
• The Einstein Equations on the 3-Brane World
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
• False Vacuum Inflation with Einstein Gravity
• Gravitational Wave Experiments and Early Universe Cosmology
• Cosmological parameter analysis including SDSS Ly-alpha forest and galaxy bias: constraints on the primordial spectrum of fluctuations, neutrino mass, and dark energy
• Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
• Gravitational Radiation from First-Order Phase Transitions
• The Pre-Big Bang Scenario in String Cosmology
• Reconstructing the Inflaton Potential --- an Overview
• Cosmic Evolution in a Cyclic Universe
• Formalising the Slow-Roll Approximation in Inflation
• A more accurate analytic calculation of the spectrum of cosmological perturbations produced during inflation
• Cosmic String Production Towards the End of Brane Inflation
• How long before the end of inflation were observable perturbations produced?
• The Inflationary Brane-Antibrane Universe
• Gravitational radiation from cosmic (super)strings: bursts, stochastic background, and observational windows
• Gravitational wave bursts from cusps and kinks on cosmic strings
• Inflationary perturbations from a potential with a step
• Lectures on string/brane cosmology
• Gravitational Radiation From Cosmological Turbulence
• Damping of Tensor Modes in Cosmology
• Detecting a gravitational-wave background with next-generation space interferometers
• Brane Interaction as the Origin of Inflation
• Tensor Perturbations in Inflationary Models as a Probe of Cosmology
• Direct detection of the inflationary gravitational wave background
• BBO and the Neutron-Star-Binary Subtraction Problem
• Detectability of inflation-produced gravitational waves
• Multiple inflation
• Inflation: flow, fixed points and observables to arbitrary order in slow roll
• Gravitational wave production: A strong constraint on primordial magnetic fields
• Bounds on Cosmic Strings from WMAP and SDSS
• The cosmic gravitational wave background in a cyclic universe
• Kinematic Constraints to the Key Inflationary Observables
• A Horizon Ratio Bound for Inflationary Fluctuations
• Relic Gravitational Waves from Cosmic Strings: Updated Constraints and Opportunities for Detection
• Spectrum of relic gravitational waves in string cosmology
• Model-Independent Reconstruction of the Primordial Power Spectrum from WMAP Data
• Brane Inflation and Cosmic String Tension in Superstring Theory
• On the inflationary flow equations
• Monte Carlo reconstruction of the inflationary potential
• The Lyth Bound Revisited
• CDM models with a BSI steplike primordial spectrum and a cosmological constant
• Constraints on the Primordial Power Spectrum from High Resolution Lyman-alpha Forest Spectra and WMAP
• Correlation analysis of stochastic gravitational wave background around 0.1-1Hz
• Dependence of Inflationary Reconstruction upon Cosmological Parameters
• Testing for double inflation with WMAP
• Polarized Cosmological Gravitational Waves from Primordial Helical Turbulence
• Detecting relic gravitational radiation from string cosmology with LIGO
• Evolution of gravitational waves from inflationary brane-world : numerical study of high-energy effects
• Supersymmetric Phase Transitions and Gravitational Waves at LISA
• Evolution of gravitational waves in Randall-Sundrum cosmology
• Dynamics of the Inflationary Flow Equations
• The Detectability of Departures from the Inflationary Consistency Equation
• The spectrum of gravitational waves in Randall-Sundrum braneworld cosmology
• Stochastic approaches to inflation model building
• Evolution of gravitational waves in the high-energy regime of brane-world cosmology
• Large primordial gravitational wave background in a class of BSI Lambda-CDM models
• Stochastic gravitational background from inflationary phase transitions
• Primordial Gravitational Waves and Inflation: CMB and Direct Detection With Space-Based Laser Interferometers
• Limits on stochastic magnetic fields: A defense of our paper [1]
• Steps toward the power spectrum of matter. III. The primordial spectrum
• Direct Detection of Primordial Gravitational Waves in a BSI Inflationary Model

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• The Quest for B Modes from Inflationary Gravitational Waves
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• Gravitational Wave Production At The End Of Inflation
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• Imprints of Massive Primordial Fields on Large-Scale Structure
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• Testing String Theory with CMB
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• Spectrum of Primordial Gravitational Waves in Modified Gravities: A Short Overview
• Anisotropic imprint of long-wavelength tensor perturbations on cosmic structure
• Cosmological test of gravity with polarizations of stochastic gravitational waves around 0.1-1 Hz
• Updated Constraints and Forecasts on Primordial Tensor Modes
• Detecting Relic Gravitational Waves by Pulsar Timing Arrays: Effects of Cosmic Phase Transitions and Relativistic Free-Streaming Gases
• Stochastic backgrounds of relic gravitons: a theoretical appraisal
• Primordial backgrounds of relic gravitons
• Polarized Gravitational Waves from Cosmological Phase Transitions
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• Primordial Non-Gaussianity and Gravitational Waves: Observational Tests of Brane Inflation in String Theory
• High-Scale Inflation and the Tensor Tilt
• Primordial Gravitational Waves Predictions for GW170817-compatible Einstein-Gauss-Bonnet Theory
• Deciphering Inflation with Gravitational Waves: Cosmic Microwave Background Polarization vs. Direct Detection with Laser Interferometers
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• Constraint on the early Universe by relic gravitational waves: From pulsar timing observations
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• $f(R)$-Gravity Generated Post-inflationary Eras and their Effect on Primordial Gravitational Waves
• Relic gravitational waves in the light of 7-year Wilkinson Microwave Anisotropy Probe data and improved prospects for the Planck mission
• Stable indications of relic gravitational waves in Wilkinson Microwave Anisotropy Probe data and forecasts for the Planck mission
• Post-inflationary thermal histories and the refractive index of relic gravitons
• Effects of a Pre-inflationary de Sitter Bounce on the Primordial Gravitational Waves in $f(R)$ Gravity Theories
• On testing and extending the inflationary consistency relation for tensor modes
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• Effects of primordial helicity on CMB
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• New Solutions of the Inflationary Flow Equations
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• The History of Inflation from Microwave Background Polarimetry and Laser Interferometry
• The first observations of wide-band interferometers and the spectra of relic gravitons
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• Constraints on the primordial gravitational waves with variable sound speed from current CMB data
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• Prospects for Primordial Gravitational Waves in String Inflation
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• Relic gravitons and non-stationary processes
• Axion Dark Matter Archaeology with Primordial Gravitational Waves
• Primordial Gravitational Waves and Reheating in a New Class of Plateau-like Inflationary Potentials
• An "Ultrasonic Image" of the Embryonic Universe: CMB Polarization Tests of the Inflationary Paradigm
• Primordial observables of explicit diffeomorphism violation in gravity
• Sensing Quantum Nature of Primordial Gravitational Waves Using Electromagnetic Probes