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霍恩德斯基理论中的静态正则黑洞:解析不可能性与非解析障碍

Static regular black holes in Horndeski theories: analytic no-go and nonanalytic obstructions

Antonio De Felice, Shinji Tsujikawa

arXiv 2607.08228首次发表:更新:

AI 中文总结

研究霍恩德斯基理论中静态正则黑洞,通过分析标量动能项\(X\)在不同分支情况,利用解析性得出非微扰无毛定理等,还分类边缘非解析偏差,确定标量 - 高斯 - 博内链为完备化方式,揭示相关黑洞特性。

AI 中文摘要

霍恩德斯基理论中的正则黑洞必须具有稳定的视界和正则的中心。我们研究具有与时间无关标量的静态、球对称、渐近平直构型。除特殊简并外,标量动能项\(X\)非零的视界分支通常会受到发散传播速度或鬼/梯度不稳定性的阻碍。在正则分支上,\(X\)在视界处消失,相关\(X = 0\)端点处的解析性将主导标量方程简化为有限组泰勒系数。对于非退化的平移对称理论,这给出了一个非微扰的当前无毛定理:标量是常数,度规是史瓦西度规,因此对于非零ADM质量在中心处奇异。对于非平移对称的正幂耦合,相应的排除适用于与史瓦西连续连接的微扰分支。我们还对边缘非解析偏差进行了分类:协变正则性将标量 - 高斯 - 博内链确定为唯一的边缘非解析完备化。在此完备化中的毛状黑洞避开了解析当前步骤,但在中心处仍然奇异。

英文摘要

Regular black holes in Horndeski theories must have stable horizons and regular centers. We study static, spherically symmetric, asymptotically flat configurations with a time-independent scalar. The horizon branch on which the scalar kinetic term $X$ remains nonzero is generically obstructed by divergent propagation speeds or ghost/gradient instabilities, aside from special degeneracies. On the regular branch, where $X$ vanishes at the horizon, analyticity at the relevant $X=0$ endpoints reduces the leading scalar equation to finite sets of Taylor coefficients. For nondegenerate shift-symmetric theories this gives a nonperturbative current no-hair theorem: the scalar is constant and the metric is Schwarzschild, hence centrally singular for nonzero ADM mass. For non-shift-symmetric positive-power couplings, the corresponding exclusion applies to the perturbative branch continuously connected to Schwarzschild. We also classify marginal nonanalytic departures: covariant regularity fixes the scalar-Gauss-Bonnet chain as the unique marginal nonanalytic completion. Hairy black holes in this completion evade the analytic current step but remain centrally singular.

Comments9 pages, no figures

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