An invariant characterization of the quasi-spherical Szekeres dust models

Abstract

The quasi-spherical Szekeres dust solutions are a generalization of the spherically symmetric Lemaitre-Tolman-Bondi dust models where the spherical shells of constant mass are non-concentric. The quasi-spherical Szekeres dust solutions can be considered as cosmological models and are potentially models for the formation of primordial black holes in the early universe. Any collapsing quasi-spherical Szekeres dust solution where an apparent horizon covers all shell-crossings that will occur can be considered as a model for the formation of a black hole. In this paper we will show that the apparent horizon can be detected by a Cartan invariant. We will show that particular Cartan invariants characterize properties of these solutions which have a physical interpretation such as: the expansion or contraction of spacetime itself, the relative movement of matter shells, shell-crossings and the appearance of necks and bellies.

21 pages, 5 figures

References in corpus (5)

• Classification of the Weyl Tensor in Higher Dimensions and Applications
• Foliation dependence of black hole apparent horizons in spherical symmetry
• Local Invariants Vanishing on Stationary Horizons: A Diagnostic for Locating Black Holes
• Physical and Geometrical Interpretation of the epsilon <= 0 Szekeres Models
• Is the shell-focusing singularity of Szekeres space-time visible?