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Title: Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite

Abstract

By taking into account the contamination of foreground radiations, we employ the Fisher matrix to forecast the future sensitivity on the tilt of power spectrum of primordial tensor perturbations for several ground-based (AdvACT, CLASS, Keck/BICEP3, Simons Array, SPT-3G), balloon-borne (EBEX, Spider) and satellite (CMBPol, COrE, LiteBIRD) experiments of B-mode polarizations. For the fiducial model n{sub t}=0, our results show that the satellite experiments give good sensitivity on the tensor tilt n{sub t} to the level σ{sub n{sub t}}∼<0.1 for r∼>2×10{sup −3}, while the ground-based and balloon-borne experiments give worse sensitivity. By considering the BICEP2/Keck Array and Planck (BKP) constraint on the tensor-to-scalar ratio r, we see that it is impossible for these experiments to test the consistency relation n{sub t}=−r/8 in the canonical single-field slow-roll inflation models.

Authors:
;  [1];  [2]
  1. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Science, Beijing 100190 (China)
  2. CAS Key Laboratory for Researches in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Chinese Academy of Sciences, Hefei, Anhui 230026 (China)
Publication Date:
OSTI Identifier:
22525246
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2015; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL INFLATION; DISTURBANCES; ENERGY SPECTRA; GRAVITATIONAL WAVES; INFLATIONARY UNIVERSE; LIMITING VALUES; MATRICES; POLARIZATION; SATELLITES; SCALARS; SENSITIVITY; TENSORS

Citation Formats

Huang, Qing-Guo, Wang, Sai, and Zhao, Wen. Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/10/035.
Huang, Qing-Guo, Wang, Sai, & Zhao, Wen. Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite. United States. https://doi.org/10.1088/1475-7516/2015/10/035
Huang, Qing-Guo, Wang, Sai, and Zhao, Wen. 2015. "Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite". United States. https://doi.org/10.1088/1475-7516/2015/10/035.
@article{osti_22525246,
title = {Forecasting sensitivity on tilt of power spectrum of primordial gravitational waves after Planck satellite},
author = {Huang, Qing-Guo and Wang, Sai and Zhao, Wen},
abstractNote = {By taking into account the contamination of foreground radiations, we employ the Fisher matrix to forecast the future sensitivity on the tilt of power spectrum of primordial tensor perturbations for several ground-based (AdvACT, CLASS, Keck/BICEP3, Simons Array, SPT-3G), balloon-borne (EBEX, Spider) and satellite (CMBPol, COrE, LiteBIRD) experiments of B-mode polarizations. For the fiducial model n{sub t}=0, our results show that the satellite experiments give good sensitivity on the tensor tilt n{sub t} to the level σ{sub n{sub t}}∼<0.1 for r∼>2×10{sup −3}, while the ground-based and balloon-borne experiments give worse sensitivity. By considering the BICEP2/Keck Array and Planck (BKP) constraint on the tensor-to-scalar ratio r, we see that it is impossible for these experiments to test the consistency relation n{sub t}=−r/8 in the canonical single-field slow-roll inflation models.},
doi = {10.1088/1475-7516/2015/10/035},
url = {https://www.osti.gov/biblio/22525246}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 10,
volume = 2015,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 2015},
month = {Thu Oct 01 00:00:00 EDT 2015}
}