2007/10/22 by Alex Kehagias, Constantina Mattheopoulou
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2007.12.027
published as Nucl.Phys.B797:117-136,2008 · 26 pages
arxiv created 2007/10/22 · openalex publication_date 2008/01/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss flat compactifications of supergravities in diverse dimensions in the presence of branes. The compactification is induced by the scalar fields of supergravity and it is such that there is no relic cosmological constant on the brane, rendering this way the latter flat. We discuss in particular the D=4, N=2,4 and D=8, N=1 supergravities with n=1,2,3 vector multiplets where the scalar manifolds are Grassmannian cosets of the form SO(2,n)/SO(2)× SO(n). By introducing branes at certain points in the transverse space, finite energy solutions to the field equations are constructed. Some of the solutions we present may be interpreted as intersecting branes.