Space-time evolution and CMB anisotropies from quantum gravity

湯川 哲之; HAMADA Ken-ji; HORATA Shinichi; YUKAWA Tetsuyuki

Title	Space-time evolution and CMB anisotropies from quantum gravity en Space-time evolution and CMB anisotropies from quantum gravity
Creator	湯川, 哲之 e-Rad 20110091 HAMADA, Ken-ji HORATA, Shinichi YUKAWA, Tetsuyuki
Accessrights	metadata only access
Rights	© 2006 The American Physical Society
Description	Abstract We propose an evolutional scenario of the universe which starts from quantum states with conformal invariance, passing through the inflationary era, and then makes a transition to the conventional Einstein space-time. The space-time dynamics is derived from the renormalizable higher-derivative quantum gravity on the basis of a conformal gravity in four dimensions. Based on the linear perturbation theory in the inflationary background, we simulate evolutions of gravitational scalar, vector, and tensor modes, and evaluate the spectra at the transition point located at the beginning of the big bang. The obtained spectra cover the range of the primordial spectra for explaining the anisotropies in the homogeneous cosmic microwave background.
Publisher	American Physical Society
Date	Issued2006-12-01
Language	eng
Resource Type	journal article
Identifier	URI https://ir.soken.ac.jp/records/3338
Relation	DOI https://doi.org/10.1103/PhysRevD.74.123502 10.1103/PhysRevD.74.123502
Journal	ISSN 15507998 Physical Review D - Particles, Fields, Gravitation and Cosmology en Physical Review D - Particles, Fields, Gravitation and Cosmology Volume Number74 Issue Number12
Oaidate	2023-08-18