Cosmological Evolution of a Brane Universe in a Type 0 String Background

I. Pappa

Cosmological Evolution of a Brane Universe in a Type 0 String Background

High Energy Physics - Theory 2007-05-23 v1

Authors: I. Pappa

Abstract

We study the cosmological evolution of a D3-brane Universe in a type 0 string background. We follow the brane universe along the radial coordinate of the background and we calculate the energy density which is induced on the brane because of its motion in the bulk. For constant values of tachyon and dilaton an inflationary phase is appearing. For non constant values of tachyon and dilaton and for a particular range of values of the scale factor of the brane-universe, the effective energy density is dominated by a term proportional to $\frac{1}{(\log\alpha)^{4}}$ indicating a slowly varying inflationary phase.

Keywords

braneworld cosmology brane inflation braneworld

Cite

@article{arxiv.hep-th/0111052,
  title  = {Cosmological Evolution of a Brane Universe in a Type 0 String Background},
  author = {I. Pappa},
  journal= {arXiv preprint arXiv:hep-th/0111052},
  year   = {2007}
}

Comments

Extended version of a poster presented at the 10th Tohwa International Symposium on String Theory in Fukuoka, Japan, to be published by the American Institute of Physics. 13 pages, 2 figures

Cosmological Evolution of a Brane Universe in a Type 0 String Background

Abstract

Keywords

Cite

Comments

Related papers