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Bounded compactness from G(E)UP
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DOI：10.1016/j.physletb.2025.139853.png)
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Abstract
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We analyse how different Generalised Uncertainty Principles could place bounds on the compactness of self-gravitating systems. By considering existing experimental bounds on the relevant parameters, we conclude that the compactness of large astrophysical objects is bounded above by the inverse of the GUP parameter, which would naturally be of order one. Conversely, the existence of black holes imposes stronger bounds on those parameters.
Keywords:
Generalised uncertainty principle
Generalised extended uncertainty principle
Compactness
Self-gravitating systems
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