On the origin of dark energy in brane world cosmology

Kiyotomo Ichiki, Ken Ichi Umezu, Toshitaka Kajino, Grant J. Mathews, Riou Nakamura, Masanobu Yahiro

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

Abstract

We investigate the cosmological evolution in a brane-world scenario in which the bulk is not empty. Rather, exchange of mass-energy between the bulk and the bane is allowed. The expansion history of the universe and the evolution of matter fields on the brane are then modified due to this exchange. We show that the flow of matter realizes an accelerating expansion of the brane, which mimics the dark energy. We investigate the constraints from various cosmological observations on the flow of matter from the bulk into the brane. Interestingly, it is possible to have a Λ = 0 cosmology to an observer in the brane which satisfies standard cosmological constraints including the CMB temperature fluctuations, Type Ia supernovae at high redshift, and the matter power spectrum.

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
PublisherAmerican Institute of Physics Inc.
Pages15-20
Number of pages6
ISBN (Print)0735403422, 9780735403420
DOIs
Publication statusPublished - Jan 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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