2000/12/31 by Donam Youm, DONAM YOUM
Physics and Astronomy · #Black Holes and Theoretical Physics #Brane #Brane cosmology #Cosmology #Cosmology and Gravitation Theories #Extra dimensions #Friedmann equations #Noncommutative and Quantum Gravity Theories #Order (exchange) #Universe #Warp drive #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1142/s0217732301004169
published in Modern Physics Letters A 16(14), 937-945 (World Scientific) · 11 pages, LaTeX, references added
arxiv created 2001/01/08 · openalex publication_date 2001/05/10 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study cosmological solutions in the dilatonic brane world models. The effective four-dimensional equations on the brane are analyzed for the models with one positive tension brane and two branes with tensions of opposite signs. Just as in the non-dilatonic brane case, the conventional Friedmann equations of the four-dimensional universe are reproduced to the leading order in matter energy density for the model with one brane and the introduction of a radion potential is required in order to reproduce the Friedmann equations with the correct sign for the model with two branes.