
TL;DR
This paper introduces the concept of the border of spacetime as a generalization of singularities, exploring its potential visibility and implications for understanding cosmic censorship and new physics in strongly curved spacetimes.
Contribution
It proposes the 'border of spacetime' concept as a novel framework to analyze singularities and their observability, extending the traditional notion of spacetime singularities.
Findings
Visible borders relate to naked singularities and are potentially observable.
The concept offers new insights into the mathematical and physical aspects of general relativity.
It provides a framework for exploring physics beyond classical singularities.
Abstract
It is still uncertain whether the cosmic censorship conjecture is true or not. To get a new insight into this issue, we propose the concept of the border of spacetime as a generalization of the spacetime singularity and discuss its visibility. The visible border, corresponding to the naked singularity, is not only relevant to mathematical completeness of general relativity but also a window into new physics in strongly curved spacetimes, which is in principle observable.
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