Numerical Analysis of Conversion between a Black Hole and a Wormhole

Abstract

Recently, there is a report on conversions between a black hole and a wormhole by controlling the input of the ghost field, which has negative kinetic terms. Based on theoretical reasoning, the numerical analysis of the conversion is achieved in four-dimensional spacetime by assuming a spherical symmetry. These numerical works are valuable not only for their scientific aspects but also for their educational aspects because high-school students were fully involved in this programming process.