规避标量化规则黑洞中的柯西视界切除
Evading Cauchy horizon excision in scalarized regular black holes
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中文总结 AI 辅助
该研究表明自发标量化不一定消除带电黑洞的柯西视界，推导了非线性电动力学P对偶框架中不破坏柯西视界的一般条件，确定了相关候选理论，为研究视界间区域的标量化及其与质量通胀的相互作用提供了可能。
中文摘要 AI 辅助
自发标量化提供了一种规避无毛发范式的动力学机制，但有人认为它通常会消除带电黑洞中的柯西视界。我们表明，这种阻碍并非普遍存在，而是源于爱因斯坦-麦克斯韦源项的符号确定结构。在非线性电动力学的P对偶公式中，我们推导了一个一般条件，据此有效标量源在视界之间改变符号，使得积分约束得以满足而不破坏柯西视界。这确立了柯西视界的命运取决于电磁耦合，并确定了标量化视界可能持续存在的候选理论。所得框架为研究视界间区域的标量化及其与质量通胀的相互作用开辟了可能性。
英文摘要
Spontaneous scalarization provides a dynamical mechanism to evade the no-hair paradigm, but it has been argued to generically eliminate the Cauchy horizon in charged black holes. We show that this obstruction is not universal, but instead follows from the sign-definite structure of the Einstein-Maxwell source term. Within the $P$-dual formulation of nonlinear electrodynamics, we derive a general condition under which the effective scalar source changes sign between the horizons, allowing the integral constraint to be satisfied without destroying the Cauchy horizon. This establishes that the fate of the Cauchy horizon depends on the electromagnetic coupling and identifies candidate theories where scalarized horizons may persist. The resulting framework opens the possibility of studying scalarization in the interhorizon region and its interplay with mass inflation.
