Effective Search Templates for a Primordial Stochastic Gravitational Wave Background
arXiv:0705.2851 · doi:10.1103/PhysRevD.76.043516
Abstract
We calculate the signal-to-noise ratio (SNR) of the stochastic gravitational-wave background in an extreme case that its spectrum has a sharp falloff with its amplitude close to the detection threshold. Such a spectral feature is a characteristic imprint of the change in the number of relativistic degrees of freedom on the stochastic background generated during inflation in the early Universe. We find that, although SNR is maximal with the correct template which is proportional to the assumed real spectrum, its sensitivity to the shape of template is fairly weak indicating that a simple power-law template is sufficient to detect the signature.
13 pages, 4 figures, final version to be published in PRD
References in corpus (23)
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
- Generating the curvature perturbation without an inflaton
- 4-Year COBE DMR Cosmic Microwave Background Observations: Maps and Basic Results
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Implications for Inflation
- Gravitational Wave Experiments and Early Universe Cosmology
- Possibility of Direct Measurement of the Acceleration of the Universe Using 0.1 Hz Band Laser Interferometer Gravitational Wave Antenna in Space
- Adiabatic CMB perturbations in pre-big bang string cosmology
- Effects of Cosmological Moduli Fields on Cosmic Microwave Background
- Cosmic Evolution in a Cyclic Universe
- Detecting a stochastic background of gravitational radiation: Signal processing strategies and sensitivities
- A Cyclic Model of the Universe
- The Sensitivity of Ligo to a Stochastic Background, and its Dependance on the Detector Orientations
- Short GRB and binary black hole standard sirens as a probe of dark energy
- Improved Calculation of the Primordial Gravitational Wave Spectrum in the Standard Model
- Detecting a gravitational-wave background with next-generation space interferometers
- Sensitivity curves for spaceborne gravitational wave interferometers
- Reheating After Quintessential Inflation and Gravitational Waves
- Probing the equation of state of the early universe with a space laser interferometer
- The first second of the Universe
- Evolution of gravitational waves through the cosmological QCD transition
- Lepton asymmetry in the primordial gravitational wave spectrum
- Search templates for stochastic gravitational-wave backgrounds
Cited by in corpus (9)
- Probing reheating temperature of the universe with gravitational wave background
- Precision calculations of the gravitational wave background spectrum from inflation
- Space laser interferometers can determine the thermal history of the early Universe
- Gravitational Wave Background and Non-Gaussianity as a Probe of the Curvaton Scenario
- Implications of the B-mode Polarization Measurement for Direct Detection of Inflationary Gravitational Waves
- Prospects for Direct Detection of Inflationary Gravitational Waves by Next Generation Interferometric Detectors
- Gravitational Waves from Q-ball Formation
- Gravitational Wave Probe of High Supersymmetry Breaking Scale
- Optimal Location of Two Laser-interferometric Detectors for Gravitational Wave Backgrounds at 100 MHz