physics
Do Black Holes have Singularities? https://arxiv.org/abs/2312.00841

There is no proof that black holes contain singularities when they are generated by real physical bodies. Roger Penrose claimed sixty years ago that trapped surfaces inevitably lead to light rays of finite affine length (FALL's). Penrose and Stephen Hawking then asserted that these must end in actual singularities. When they could not prove this they decreed it to be self evident. It is shown that there are counterexamples through every point in the Kerr metric. These are asymptotic to at least one event horizon and do not end in singularities.

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physics Most Excellent Physics Community. Strange new phase of matter created in quantum computer acts like it has two time dimensions - What happens when you mix a time crystal and a quasy crystal?
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physics
What if the universe had no beginning? www.livescience.com

Brief introduction to Causal Set Theory.

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physics
Wormholes Open for Transport physics.aps.org

[Traversable wormholes in Einstein-Dirac-Maxwell theory](https://arxiv.org/abs/2010.07317) [Humanly traversable wormholes](https://arxiv.org/abs/2008.06618)

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physics
Merging boson stars could explain massive black hole collision and prove existence of dark matter phys.org

An international team of scientists led by the Galician Institute of High Energy Physics (IGFAE) and the University of Aveiro shows that the heaviest black hole collision ever observed, produced by the gravitational-wave GW190521, might actually be something even more mysterious: the merger of two boson stars.

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announcements
Announcements SoloBSD 4 years ago 96%
New Community about Physics. lemmy.ml

Hi. I've created a new community to discuss topics related to physics. Join us!

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