Constraints on Brans-Dicke cosmology with a varying Λ term due to the big-bang nucleosynthesis and WMAP

Riou Nakamura, Masa Aki Hashimoto, Kenzo Arai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigate the big-bang nucleosynthesis (BBN) in a Brans-Dicke model with a varying Λ term. We find that the cosmic expansion rate differs appreciably from that of the Friedmann model during the BBN epoch. The produced abundances of 4He, D, and 7Li are consistent with both the observed ones and the baryon density obtained from WMAP.

Original languageEnglish
Title of host publicationORIGIN OF MATTER AND EVOLUTION OF GALAXIES
Subtitle of host publicationInternational Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology
Pages449-451
Number of pages3
DOIs
Publication statusPublished - Dec 1 2006
EventORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology - Tokyo, Japan
Duration: Nov 8 2005Nov 11 2005

Publication series

NameAIP Conference Proceedings
Volume847
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology
CountryJapan
CityTokyo
Period11/8/0511/11/05

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Nakamura, R., Hashimoto, M. A., & Arai, K. (2006). Constraints on Brans-Dicke cosmology with a varying Λ term due to the big-bang nucleosynthesis and WMAP. In ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology (pp. 449-451). (AIP Conference Proceedings; Vol. 847). https://doi.org/10.1063/1.2234455