AI 中文总结
研究四维真空爱因斯坦方程的静态解，其描述含两个对映共旋转黑洞的洛伦兹虫洞，由有张力的宇宙弦悬挂，度规对多数参数值存在裸环奇点。
AI 中文摘要
我们报告了四维真空爱因斯坦方程的一个静态解，它描述了一个包含两个对映共旋转黑洞的洛伦兹虫洞。这两个黑洞由两根具有正或负张力的半无限宇宙弦悬挂在“另一个”类空无穷远处。对于几乎所有参数值，该度规还存在一个裸环奇点。
英文摘要
We report on a new three-parameter stationary solution of the four-dimensional vacuum Einstein equations, which describes a Lorentzian wormhole harboring two antipodal co-rotating black holes. These are hung from one of the two spacelike infinities by two semi-infinite cosmic strings with positive or negative tension. We evaluate the Komar masses and angular momenta of the two black holes, and check that these obey the usual Smarr relation, as well as the generalized first law for a system of collinear black holes and cosmic strings. While free from Misner strings, this spacetime allows closed timelike curves within a bounded volume. The metric also admits a naked ring singularity for almost all values of the parameters.
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