On black bounce space-times in non-linear electrodynamics
arxiv(2024)
摘要
One of the main issues in gravitation is the presence of singularities in the
most common space-time solutions of General Relativity, as the case of black
holes. A way of constructing regular solutions that remove spacelike
singularities consists in implement a bounce on such space-time, leading to
what is usually known as black bounce space-times. Such space-times are known
to describe regular black holes or traversable wormholes. However, one of the
main issues lies on reconstructing the appropriate source that leads to such a
solution. In this paper, a reconstruction method is implemented to show that
such types of metrics can be well accommodated in non-linear electrodynamics
with the presence of a scalar field. Some of the most important black bounces
solutions are reconstructed in this framework, both in 3+1 as in 2+1
dimensions. For the first time in the literature, these solutions have an
electrically charged source of matter from non-linear electrodynamics. Specific
features are indicated that distinguish electric sources from magnetic ones,
previously found for the same space-times.
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