Radially infalling brane and moving domain wall in the brane cosmology
Abstract
We discuss the brane cosmology in the 5D anti de Sitter Schwarzschild (AdSS$_5$) spacetime. A brane with the tension $\sigma$ is defined as the edge of an AdSS$_5$ space. We point out that the location of the horizon is an apparently, singular point at where we may not define an embedding of the AdSS$_5$ spacetime into the moving domain wall (MDW). We resolve this problem by introducing a radially infalling brane (RIB) in AdSS$_5$ space, where an apparent singularity turns out to be a coordinate one. Hence the CFT/FRWcosmology is welldefined at the horizon. As an example, an universal Cardy formula for the entropy of the CFT can be given by the Friedmann equation at the horizon.
 Publication:

arXiv eprints
 Pub Date:
 February 2001
 arXiv:
 arXiv:hepth/0102184
 Bibcode:
 2001hep.th....2184M
 Keywords:

 High Energy Physics  Theory
 EPrint:
 9 pages, REVTEX