Spherical Domain Wall formed by Field Dynamics of Hawking Radiation and Spontaneous Charging-up of Black Hole

TL;DR

This paper studies how black holes can form spherical domain walls due to Hawking radiation in gauge-Higgs-Yukawa theories, leading to spontaneous black hole charging via charge transport mechanisms.

Contribution

It demonstrates that spherical domain walls form around black holes through field dynamics, not thermal phase transitions, and introduces a charge-transport mechanism causing black hole charging.

Findings

Spherical domain walls form around black holes with high Hawking temperature.

Electroweak and GUT scale walls are shown to form.

Black holes can spontaneously acquire charge via Hawking radiation-driven charge transport.

Abstract

We investigate the Hawking radiation in the gauge-Higgs-Yukawa theory. The ballistic model is proposed as an effective description of the system. We find that a spherical domain wall around the black hole is formed by field dynamics rather than thermal phase-transition. The formation is a general property of the black hole whose Hawking temperature is equal to or greater than the energy scale of the theory. The formation of the electroweak wall and that of the GUT wall are shown. We also find a phenomenon of the spontaneous charging-up of the black hole by the wall. The Hawking radiation drives a mechanism of the charge-transportation into the black hole when C- and CP-violation are assumed. The mechanism can strongly transport the hyper-charge into a black hole of the electroweak scale.