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User: Neurotensor

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  1. Re:All Einstein? on Doubting the Existence of Black Holes · · Score: 1

    Black Holes and BECs are nothing like each other.

    Black Holes are predicted by the General theory of Relativity, while BECs are predicted by Quantum Mechanics. There's not one characteristic of conventional black holes shared by BECs.

    The two theories are unfortunately completely incompatible, one works for the very small scales and the other for the enormous scales.

    Yes, Einstein had his hands all over both theories, but that doesn't make them compatible.

    As an example, General Relativity assumes that the distribution of matter can be found to arbitrary accuracy, and that objects have nice smooth trajectories that are geodesics of the spacetime manifold (if there are no forces applied), while Quantum Mechanics maintains that position is a concept that doesn't make sense any more and trajectories are meaningless. In fact, in Quantum Mechanics the idea of force isn't too useful either...

  2. Not a good idea to post before publishing on Doubting the Existence of Black Holes · · Score: 4, Interesting

    I would like to point out that posting an article before the team concerned has published their paper is very bad news for the team.

    What often happens is that the team becomes doubted initially because they haven't published the paper, or because the article writer doesn't know what he/she is writing about. Sometimes it blows up in their face, ala Cold Fusion.

    I would also like to note that the technical quality of the article is poor and shows a lack of understanding of the subject matter.

    For example:
    "The location of a particle constantly varies according to a statistical pattern -- one moment it's here, another moment it's there"

    This shows a complete lack of understanding of the uncertainty principle! The particle has no 'position', and as such it can't be here one moment and there the next. Its position-space wavefunction is the best we can get.

    There are also quite a lot of claims made in the article that really deserve a reference - hence the problem if the only reference is unpublished - in particular I would like to see an argument for why spacetime undergoes a phase transition inside the black hole. What theory predicted this? Certainly not General Relativity, which is what predicted black holes in the first place. What modifications must be made? How is quantum mechanics used in this setting?

    Note that quantum gravity is still an unsolved problem, so I'd be surprised if this prediction turns out to be spot-on. But I can't tell for sure since the paper is unpublished =(