Classical black holes are known for almost half a century to nullify exterior classical massive vector field associated with a charge crossing the event horizon. This implies that, from the point of view of an external observer, the Proca field of the charge is screened with the strength gradually increasing as the charge adiabatically approaches the event horizon. In this paper we reject the adiabaticity constraint and calculate analytically the field evolution with respect to a distant observer in the frame of the simplest model of a contracting charged spherical shell concentrically surrounding a Schwarzschild black hole. We show that a time scale of the screening is determined by a mass of the black hole and, moreover, loss of Proca hair during the collapse of charged matter has the same temporal character. Due to existence of the event horizon, there is discontinuous jump between massive and massless electrodynamics. This means that presence of an arbitrarily small mass of the photon induces observable effects, which include generation of electric asymmetry of the Universe and galactic magnetic fields.

在将近半个世纪的时间里，经典黑洞使与事件越过视界的电荷相关的外部经典大质量矢量场无效。这意味着，从外部观察者的角度来看，随着电荷绝热地接近事件视界，电荷的Proca场将随着强度逐渐增大而被屏蔽。在本文中，我们拒绝绝热约束，并在同心围绕Schwarzschild黑洞的收缩带电球壳的最简单模型的框架内，分析相对于远处观察者的场演化。我们表明，筛选的时间尺度是由黑洞的质量决定的，此外，带电物质坍塌过程中Proca毛发的损失具有相同的时间特征。由于存在事件视界，因此在大规模和非大规模电动力学之间存在不连续的跳跃。这意味着任意数量的光子质量都会引起可观察到的效应，包括产生宇宙的电不对称性和银河磁场。