No black-hole theorem in three-dimensional gravity
@article{Ida2000NoBT,
title={No black-hole theorem in three-dimensional gravity},
author={Ida},
journal={Physical review letters},
year={2000},
volume={85 18},
pages={
3758-60
}
}A common property of known black-hole solutions in (2+1)-dimensional gravity is that they require a negative cosmological constant. To explain this, it is shown in this Letter that a (2+1)-dimensional gravity theory which satisfies the dominant energy condition forbids the existence of a black hole.
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