2001/03/28 by J. M. Cline, U. A. Yajnik
Physics and Astronomy · #hep-ph
published as Pramana 55 (2000) 317-320 · 4 pages, contribution to Neutrino and Astroparticle Physics Working group report, Proceedings of WHEPP-6, Chennai, India, Jan. 2000
arxiv created 2001/03/28 · arxiv updated 2009/11/30
Randall and Sundrum have proposed that we live on a brane embedded in 5-dimensional anti-deSitter space, as a solution to the hierarchy problem. We examine the possibility of using a scalar field in the 5-D bulk as the inflaton, and show that it gives results which are indistinguishable from an inflaton which is restricted to our brane. This makes it difficult to get large enough density perturbations in simple one-field inflationary models, since mass scales on our brane are supposed to be limited by a cutoff of order 1 TeV.