论文标题
在广告紧凑型中搜索Coleman-de Luccia Bubbles
Searching for Coleman-de Luccia bubbles in AdS compactifications
论文作者
论文摘要
Coleman-de Luccia转变是亚稳态引力真空中气泡成核的自发过程，其中包括其内部的真正稳定真空。从通过截断II型和M理论获得的低维度测量超重力的角度来看，这些瞬时过程由de Sitter Foliations的光滑域壁表示。这些几何形状必须以两种不同的ADS真空连接，以使壁由内部和外部定义。我们为这种径向流提供了一个一阶配方，并提供了两个通过该技术获得的重力插入的完全反向反应的例子，超出了薄壁近似。在第一个中，我们考虑了最小的7D超级重力，描述了M理论在压缩的4个球员上的截断，并接受了两个广告$ _7 $ _7 $ vacua，一个超对称性，另一个没有。其次，我们将相同的策略应用于6D罗马人超级重力，并始终如一地截断了大规模的IIA超级重力。同样，在这种情况下，我们得出了Brandhuber-Oz真空与非苏型对称广告之间的DS域壁插值$ _6 $ _6 $真空。
Coleman-de Luccia transitions are spontaneous processes of nucleation of bubbles within metastable gravitational vacua including in their interior a true stable vacuum. From the perspective of lower-dimensional gauged supergravities obtained by truncating Type II and M-theory, these instantonic processes are represented by smooth domain walls featured by de Sitter foliations. These geometries must connect two different AdS vacua in such a way that the wall is defined by an interior and an exterior. We propose a first-order formulation for such radial flows and present two fully backreacted examples of gravitational instantons obtained through this technique, beyond the thin-wall approximation. In the first we consider minimal 7d supergravity describing the truncation of M-theory over a squashed 4-sphere and admitting two AdS$_7$ vacua, one supersymmetric and the other not. Secondly we apply the same strategy to 6d Romans supergravity obtained with consistent truncation of massive IIA supergravity. Also in this case we derive a dS domain wall interpolating between the Brandhuber-Oz vacuum and the non-supersymmetric AdS$_6$ vacuum of the theory.
