2001/02/27 by Y. S. Myung
Physics and Astronomy · #hep-th
published as J.Korean Phys.Soc. 43 (2003) 991-996 · 9 pages, REVTEX
arxiv created 2001/02/27 · arxiv updated 2009/11/30
We discuss the brane cosmology in the 5D anti de Sitter Schwarzschild (AdSS5) spacetime. A brane with the tension σ is defined as the edge of an AdSS5 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 AdSS5 spacetime into the moving domain wall (MDW). We resolve this problem by introducing a radially infalling brane (RIB) in AdSS5 space, where an apparent singularity turns out to be a coordinate one. Hence the CFT/FRW-cosmology is well-defined 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.