Physics of the interior of a black hole with an exotic scalar matter

TL;DR

This paper investigates the nonlinear effects of an exotic scalar field with negative energy density on a Reissner-Nordstrom black hole, revealing unique phenomena such as the black hole's vanishing without forming a spacelike singularity.

Contribution

It introduces a numerical study of black hole interactions with an exotic scalar field, highlighting differences from normal scalar field effects and demonstrating black hole evaporation under strong exotic scalar irradiation.

Findings

No spacelike strong singularity formation observed.

Exotic scalar field causes antifocusing effects in gravity.

Black hole can vanish when irradiated by a strong exotic scalar pulse.

Abstract

We use a numerical code to consider the nonlinear processes arising when a Reissner-Nordstrom black hole is irradiated by an exotic scalar field (modelled as a free massless scalar field with an opposite sign for its energy-momentum tensor). These processes are quite different from the processes arising in the case of the same black hole being irradiated by a pulse of a normal scalar field. In our case, we did not observe the creation of a spacelike strong singularity in the T-region of the space-time. We investigate the antifocusing effects in the gravity field of the exotic scalar field with the negative energy density and the evolution of the mass function. We demonstrate the process of vanishing of the black hole when it is irradiated by a strong pulse of an exotic scalar field.