Back

Title
  • From conformal field theory spectra to CMB multipoles in quantum gravity cosmology
  • en From conformal field theory spectra to CMB multipoles in quantum gravity cosmology
Creator
    • 湯川, 哲之
    • e-Rad 20110091
    • HAMADA, Ken-ji
    • HORATA, Shinichi
    • YUKAWA, Tetsuyuki
Accessrights metadata only access
Rights
  • © 2010 The American Physical Society
Description
  • Abstract We study the inflation process of the Universe based on the renormalizable quantum gravity formulated as a conformal field theory. We show that the power-law conformal field theory spectrum approaches that of the Harrison-Zel’dovich-Peebles–type as the amplitude of gravitational potential gradually reduces during the inflation. The non-Gaussanity parameter is preserved within an order of unity due to the diffeomorphism invariance. Sharp falloff of the angular power spectrum of cosmic microwave background at large scale is understood as a consequence of the existence of dynamical scale of the quantum gravity ΛQG(≃1017  GeV). The angular power spectra are computed and compared with the WMAP5 and ACBAR data with a quality of χ2/dof≃1.1.
Publisher American Physical Society
Date
    Issued2010-04-28
Language
  • eng
Resource Type journal article
Identifier URI https://ir.soken.ac.jp/records/3337
Relation
  • DOI https://doi.org/10.1103/PhysRevD.81.083533 10.1103/PhysRevD.81.083533
Journal
    • ISSN 15507998
      • Physical Review D - Particles, Fields, Gravitation and Cosmology en Physical Review D - Particles, Fields, Gravitation and Cosmology
      • Volume Number81 Issue Number8
Oaidate 2023-08-18