2001/06/25 by Andre Lukas, André Lukas, David Skinner +1
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Brane #Context (archaeology) #Cosmology #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Geology #Heterotic string theory #Inflation (cosmology) #Mathematics #Orbifold #Paleontology #Physics #Quantum mechanics #State (computer science) #Theoretical physics #Transition (genetics) #Vacuum state #hep-th
paper · pdf · doi:10.1088/1126-6708/2001/09/020
published as JHEP 0109:020,2001 · 50 pages, 3 figures, minor typos corrected
arxiv created 2001/06/25 · openalex publication_date 2001/09/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In the context of a five-dimensional brane-world model motivated from heterotic M-theory, we develop a framework for potential-driven brane-world inflation. Specifically this involves a classification of the various background solutions of (A)dS5 type, an analysis of five-dimensional slow-roll conditions and a study of how a transition to the flat vacuum state can be realized. It is shown that solutions with bulk potential and both bane potentials positive exist but are always non-separating and have a non-static orbifold. It turns out that, for this class of backgrounds, a transition to the flat vacuum state during inflation is effectively prevented by the rapidly expanding orbifold. We demonstrate that such a transition can be realized for solutions where one boundary potential is negative. For this case, we present two concrete inflationary models which exhibit the transition explicitly.