In this paper, we realise the charged Nariai black hole on a braneworld from a nucleated bubble in AdS5, known as the dark bubble model. Geometrically, the black hole takes the form of a cylindrical spacetime pulling on the dark bubble. This is realised by a brane embedding in an AdS5 black string background. Identifying the brane with a D3-brane in string theory allows us to determine a relation between the fine structure constant and the string coupling, , which was previously obtained for a microscopic black hole. We also speculate on the consequences for the Festina Lente bound and neutrino masses.

中文翻译：

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带电的 Nariai 黑洞在黑暗气泡上


在本文中，我们从 AdS5 中的有核气泡实现了 braneworld 上带电的 Nariai 黑洞，称为暗气泡模型。从几何学上讲，黑洞呈现出圆柱形时空拉扯暗气泡的形式。这是通过在 AdS5 黑色字符串背景中嵌入 brane 来实现的。在弦理论中用 D3-brane 识别 brane 使我们能够确定精细结构常数和弦耦合之间的关系，这是以前为微观黑洞获得的。我们还推测了对 Festina Lente 束缚和中微子质量的影响。