Prospects for Direct Detection of Inflationary Gravitational Waves by Next Generation Interferometric Detectors

Abstract

We study the potential impact of detecting the inflationary gravitational wave background by the future space-based gravitational wave detectors, such as DECIGO and BBO. The signal-to-noise ratio of each experiment is calculated for chaotic/natural/hybrid inflation models by using the precise predictions of the gravitational wave spectrum based on numerical calculations. We investigate the dependence of each inflation model on the reheating temperature which influences the amplitude and shape of the spectrum, and find that the gravitational waves could be detected for chaotic/natural inflation models with high reheating temperature. From the detection of the gravitational waves, a lower bound on the reheating temperature could be obtained. The implications of this lower bound on the reheating temperature for particle physics are also discussed.

22 pages, 5 figures, revised version accepted by PRD

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Cited by in corpus (22)

• Cosmology with the Laser Interferometer Space Antenna
• The First Three Seconds: a Review of Possible Expansion Histories of the Early Universe
• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• Observable Spectra of Induced Gravitational Waves from Inflation
• Ability of LIGO and LISA to probe the equation of state of the early Universe
• Probing the Universe through the Stochastic Gravitational Wave Background
• Prospects for determination of thermal history after inflation with future gravitational wave detectors
• Blue-tilted inflationary tensor spectrum and reheating in the light of NANOGrav results
• Scientific Potential of DECIGO Pathfinder and Testing GR with Space-Borne Gravitational Wave Interferometers
• Prospects of determination of reheating temperature after inflation by DECIGO
• Propagating speed of primordial gravitational waves and inflation
• Small scale induced gravitational waves from primordial black holes, a stringent lower mass bound, and the imprints of an early matter to radiation transition
• Implications of the B-mode Polarization Measurement for Direct Detection of Inflationary Gravitational Waves
• Early Universe Tomography with CMB and Gravitational Waves
• Precision Early Universe Cosmology from Stochastic Gravitational Waves
• Observational signatures of the parametric amplification of gravitational waves during reheating after inflation
• Imprints of Cosmic Phase Transition in Inflationary Gravitational Waves
• Higher Order Corrections to the Primordial Gravitational Wave Spectrum and its Impact on Parameter Estimates for Inflation
• Reheating signature in the gravitational wave spectrum from self-ordering scalar fields
• The History of Inflation from Microwave Background Polarimetry and Laser Interferometry
• Connecting Inflation to the NANOGrav 15-year Data Set via Massive Gravity
• Primordial gravitational waves: Model effects on time evolution and spectrum