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Self-Similar Scalar Field Collapse: Naked Singularities and Critical Behaviour

Patrick R Brady
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Abstract

Homothetic scalar field collapse is considered in this article. By making a suitable choice of variables the equations are reduced to an autonomous system. Then using a combination of numerical and analytic techniques it is shown that there are two classes of solutions. The first consists of solutions with a non-singular origin in which the scalar field collapses and disperses again. There is a singularity at one point of these solutions, however it is not visible to observers at finite radius. The second class of solutions includes both black holes and naked singularities with a critical evolution (which is neither) interpolating between these two extremes. The properties of these solutions are discussed in detail. The paper also contains some speculation about the significance of self-similarity in recent numerical studies.

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Patrick R Brady. 1994-09-16. Self-Similar Scalar Field Collapse: Naked Singularities and Critical Behaviour. https://doi.org/10.1103/physrevd.51.4168

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