New branch of Kaluza-Klein compactification
arXiv:0710.0707 · doi:10.1103/PhysRevD.76.124003
Abstract
We found a new branch of solutions in Freund-Rubin type flux compactifications. The geometry of these solutions is described as the external space which has a de Sitter symmetry and the internal space which is topologically spherical. However, it is not a simple form of dS_p x S^q but a warped product of de Sitter space and a deformed sphere. We explicitly constructed numerical solutions for a specific case with p=4 and q=4. We show that the new branch of solutions emanates from the marginally stable solution in the branch of dS_4 x S^4 solutions.
6 pages, 3 figures, REVTeX4;version accepted for publication in PRD