We analyze the “vacuum” polarization induced by a quantum charged scalar field near the inner horizon of a charged black hole in quantum states evolving from arbitrary regular in states. Contrary to naive expectations, we find that near an inner horizon, the transversal component of the expected current density can have either sign depending on the black hole and field parameters. Thus, the inner horizon can be charged or discharged. But we find that it is always discharged close to extremality. We also find that quantum effects dominate in that the strength of the blow up of the quantum current at the inner horizon is state independent and stronger than that of the current of a classical solution.

中文翻译：

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黑洞内部的量子（Dis）电荷

我们分析了由带电黑洞内部视界附近的量子带电标量场引起的“真空”极化，量子态从任意规则状态演变而来。与幼稚的预期相反，我们发现在内视界附近，预期电流密度的横向分量可以具有取决于黑洞和场参数的任一符号。因此，内部地平线可以充电或放电。但我们发现它总是在接近极值的情况下放电。我们还发现量子效应占主导地位，因为量子电流在内部视界的爆发强度与状态无关，并且比经典解的电流强度更强。