标题： 反德西特虫洞拐点 显示英文标题

标题： Anti-de Sitter wormhole kink

摘要： 描述四维渐近反德西特虫洞某一有限扇区的度规，在允许光锥根据单波纹守恒定律在超曲面上倾斜的情况下，可以转化为五维反德西特时空中的Tangherlini黑洞的时间常数截面的度规。 所得的倾斜度规可以被极大延拓，从而在Tangherlini时间和径向坐标的欧几里得延拓上产生瞬子结构。 在半经典区域，这个波纹与闭合类时曲线的存在有关。 显示英文摘要

摘要： The metric describing a given finite sector of a four-dimensional asymptotically anti-de Sitter wormhole can be transformed into the metric of the time constant sections of a Tangherlini black hole in a five-dimensional anti-de Sitter spacetime when one allows light cones to tip over on the hypersurfaces according to the conservation laws of an one-kink. The resulting kinked metric can be maximally extended, giving then rise to an instantonic structure on the euclidean continuation of both the Tangherlini time and the radial coordinate. In the semiclassical regime, this kink is related to the existence of closed timelike curves.