论文标题
从反DE保姆波动中的DE STINTER气泡
De Sitter bubbles from anti-de Sitter fluctuations
论文作者
论文摘要
宇宙学的加速很难适应涉及超级重力和超弦的基本相互作用的理论。另一种选择是，加速度不是通用的，而是发生在大型局部区域中，这在接受定期使用Sitter样的内饰的常规黑洞的理论中可能是可能的。我们通过将其放置在全球抗DE保姆背景中，从而大大加强了这种情况，在该背景中，通过类似于Bizon-RostWorowski在总体相对论中的不稳定的机制将增强“ De Sitter Bubbles”的形成。这开设了一个竞技场，以讨论来自反DE保姆波动的多个加速宇宙的产生。我们在一个简单的二维Dilaton-Gravity模型的背景下通过显式数值工作证明了这种崩溃的增强，该模型模仿了高维重力的球形对称扇区。
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 placing it in a global anti-de Sitter background, where the formation of 'de Sitter bubbles' will be enhanced by mechanisms analogous to the Bizon-Rostworowski instability in general relativity. This opens an arena for discussing the production of multiple accelerating universes from anti-de Sitter fluctuations. We demonstrate such collapse enhancement by explicit numerical work in the context of a simple two-dimensional dilaton-gravity model that mimics the spherically symmetric sector of higher-dimensional gravities.
