@Article{Guerrero_etal2023,
author="Guerrero, M.
and Olmo, G. J.
and Rubiera-Garcia, D.",
title="Geodesic completeness of effective null geodesics in regular space-times with non-linear electrodynamics",
journal="European Physical Journal C",
year="2023",
publisher="Springer",
volume="83",
number="9",
pages="785--8pp",
abstract="We study the completeness of light trajectories in certain spherically symmetric regular geometries found in Palatini theories of gravity threaded by non-linear (electromagnetic) fields, which makes their propagation to happen along geodesics of an effective metric. Two types of geodesic restoration mechanisms are employed: by pushing the focal point to infinite affine distance, thus unreachable in finite time by any sets of geodesics, or by the presence of a defocusing surface associated to the development of a wormhole throat. We discuss several examples of such geometries to conclude the completeness of all such effective paths. Our results are of interest both for the finding of singularity-free solutions and for the analysis of their optical appearances e.g. in shadow observations.",
optnote="WOS:001065963300005",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5710), last updated on Mon, 30 Oct 2023 14:07:22 +0000",
issn="1434-6044",
doi="10.1140/epjc/s10052-023-11969-y",
opturl="https://arxiv.org/abs/2304.05852",
opturl="https://doi.org/10.1140/epjc/s10052-023-11969-y",
language="English"
}