de Sitter Bubbles from Anti–de Sitter Fluctuations
de Sitter Bubbles from Anti–de Sitter Fluctuations
Cosmological acceleration is difficult to accommodate in theories of fundamental interactions involving supergravity and superstrings. An alternative is that the acceleration is not universal but happens in a large localized region, which is possible in theories admitting regular black holes with de Sitter-like interiors. We considerably strengthen this scenario by …