Paper Title:
Generalized Gravity Theory Constrained by CMBR Observations
  Abstract

We investigate the cosmological perturbations based on the f(R) gravity theory. Comparing the large angular scale CMBR observation we obtain several important constraints on the inflation model based on the f(R) gravity theory: the ordinary slow-roll assumption during the inflation with the Zel’dovich spectral conditions for the scalar and the tensor-type structures yields R2 gravity as the unique candidate. Also, the considered model predicts the nearly scale-invariant Zel’dovich spectra. We derive the strong constraints on the coupling constants of the R2 term and the energy scale during the inflation using the COBE-DMR observations. The result shows the gravitational wave contribution is very small. Therefore, future observations of the spectral indices and the gravitational wave contribution to CMBR temperature and polarization anisotropies will subject the current inflation models to a test.

  Info
Periodical
Key Engineering Materials (Volumes 277-279)
Edited by
Kwang Hwa Chung, Yong Hyeon Shin, Sue-Nie Park, Hyun Sook Cho, Soon-Ae Yoo, Byung Joo Min, Hyo-Suk Lim and Kyung Hwa Yoo
Pages
795-798
DOI
10.4028/www.scientific.net/KEM.277-279.795
Citation
H. Noh, "Generalized Gravity Theory Constrained by CMBR Observations", Key Engineering Materials, Vols. 277-279, pp. 795-798, 2005
Online since
January 2005
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