2009/12/31 by Jose J. Blanco-Pillado, José J. Blanco-Pillado, Delia Schwartz-Perlov +1 · 40 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Black hole (networking) #Brane #Brane cosmology #Compactification (mathematics) #Cosmology and Gravitation Theories #De Sitter universe #Instanton #Noncommutative and Quantum Gravity Theories #Nucleation #Physics #Quantum mechanics #Spacetime #Theoretical physics #Universe #gr-qc #hep-th
paper · pdf · doi:10.1088/1475-7516/2010/05/005
published in Journal of Cosmology and Astroparticle Physics 2010(05), 005 (Institute of Physics) · 32 pages, 15 figures New references added
arxiv created 2010/05/06 · openalex publication_date 2010/05/07 · arxiv updated 2010/05/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Topology-changing transitions between vacua of different effective dimensionality are studied in the context of a 6-dimensional Einstein-Maxwell theory. The landscape of this theory includes a 6 d de Sitter vacuum ( dS 6 ), a number of dS 4 × S 2 and AdS 4 × S 2 vacua, and a number of AdS 2 × S 4 vacua. We find that compactification transitions dS 6 → AdS 2 × S 4 occur through the nucleation of electrically charged black hole pairs, and transitions from dS 6 to dS 4 × S 2 and AdS 4 × S 2 occur through the nucleation of magnetically charged spherical black branes. We identify the appropriate instantons and describe the spacetime structure resulting from brane nucleation.