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arXiv · 2512.20998

Universality and Criticality in Mass-less Scalar Field Collapse

Koushiki·Rituparno Goswami·Pankaj S. Joshi
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Abstract

In this paper, we observe the collapse of a mass-less scalar field covariantly. We show that the strengths of the collapsing and dispersing modes of this scalar field will decide whether the collapse will end up in a black-hole or disperse. We find a locally naked null singularity as a critical case between these two and confirm that there is a single dimensionless parameter that determine the end state. This work is ansatz-independent, hence, true for all mass-less scalar field families. We also show that the geometrical mass of these singularities go to zero.

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Koushiki, Rituparno Goswami, Pankaj S. Joshi. 2025-12-24. Universality and Criticality in Mass-less Scalar Field Collapse. https://arxiv.org/abs/2512.20998

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