Cosmological Evolution of a Brane Universe in a Type 0 String Background
Abstract
We study the cosmological evolution of a D3brane 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 braneuniverse, the effective energy density is dominated by a term proportional to $\frac{1}{(\log\alpha)^{4}}$ indicating a slowly varying inflationary phase.
 Publication:

arXiv eprints
 Pub Date:
 November 2001
 arXiv:
 arXiv:hepth/0111052
 Bibcode:
 2001hep.th...11052P
 Keywords:

 High Energy Physics  Theory
 EPrint:
 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