Orientiholes
Orientiholes
摘要：
通过沿三个非内部空间方向对IIB定向折叠紧致化中的空间填充D-膜进行T-对偶化，得到了存在于具有规范空间反射对称性宇宙中的黑洞束缚态.我们称这些物体为定向孔。各种IIA orientihole配置的引力熵提供了一个“实验”估计的真空在IIB景观的各个部门的数量。此外，定向孔的基本物理性质映射到（有时是微妙的）微观特征，从而提供了一个有用的替代观点，在D膜模型建设中出现的一些问题。更一般地说，我们给orientihole的推广最近推导出的墙交叉公式，并猜想的拓扑字符串类似的OSV猜想，但与线性，而不是二次识别的配分函数的关系。
英文摘要：
By T-dualizing space-filling D-branes in IIB orientifold compactifications along the three non-internal spatial directions, we obtain black hole bound states living in a universe with a gauged spatial reflection symmetry. We call these objects orientiholes. The gravitational entropy of various IIA orientihole configurations provides an "experimental" estimate of the number of vacua in various sectors of the IIB landscape. Furthermore, basic physical properties of orientiholes map to (sometimes subtle) microscopic features, thus providing a useful alternative viewpoint on a number of issues arising in D-brane model building. More generally, we give orientihole generalizations of recently derived wall crossing formulae, and conjecture a relation to the topological string analogous to the OSV conjecture, but with a linear rather than a quadratic identification of partition functions.
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