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The void: Imprint of another universe?

  1. Nov 21, 2007 #1

    cristo

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    I was reading the linked article (from newscientist) in another thread on this forum, and saw the cover story to this month's NS; the article is here.

    So, what does anyone else think? Clearly it's a very contraversial claim, and I can't find any recent papers of hers (Mersini-Houghton) on the arxiv that discuss this. I was under the impression that the standard model does allow for the void suggested by the WMAP cold spot?
     
    Last edited: Nov 21, 2007
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  3. Nov 21, 2007 #2

    Chronos

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    Controversial is a good description. I do not find such a void to be particularly significant statistically. Newscientist is a bleeding edge publication, not that it diminishes the discussion, but does put it into perspective. Show the math.
     
  4. Nov 21, 2007 #3

    cristo

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    I agree.
    I'd love to, but as I said I can't find any paper that this is referring to. Perhaps others will be able to assist.
     
  5. Nov 21, 2007 #4
    Do you have a reference for that Chris?
     
  6. Nov 22, 2007 #5
    I think it is due to a region of "antigravity". I have a theory about that (hopefully to be published next year).

    Rudi Van Nieuwenhove
     
  7. Nov 22, 2007 #6

    Garth

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    Extragalactic Radio Sources and the WMAP Cold Spot
    Garth
     
  8. Nov 22, 2007 #7

    Chronos

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    Thanks for the link, Garth! It is food for thought. I don't like the math, but I am no stranger to bad guesses.
     
    Last edited: Nov 22, 2007
  9. Nov 22, 2007 #8

    Chronos

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    I look forward to your paper, Rudi.
     
  10. Nov 25, 2007 #9

    George Jones

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  11. Dec 10, 2007 #10

    Garth

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    The idea that gravitation is the result of a distortion of the quantum vacuum by the presence of a mass is a very interesting hypothesis Rudi, have you submitted the paper to a peer reviewed journal?

    To advocate a non-relativistic theory of gravitation you need to explain all the observations that GR predicts so well and further tests such as the Gravity Probe B satellite experiment that is being evaluated at this moment.

    Garth
     
    Last edited by a moderator: Dec 10, 2007
  12. Dec 10, 2007 #11
    The idea that gravitation is the result of a distortion of the quantum vacuum by the presence of a mass was published in a peer reviewed journal (R. Van Nieuwenhove, Quantum Gravity : a Hypothesis, Europhysics Letters, 17 (1), pp. 1-4 (1992)).
    Indeed, at this stage the theory is non-relativistic and it therefore can not predict all the effects which GR predicts. The MOND theory also started as a non-relativistic theory (before it was upgraded to the ugly relativistic TeVeS theory), so I will also need a lot of time before coming up with a relativistic theory.
    One can say that GR predicts everything so well, but if it turns out that dark matter does not exist (of which I am convinced), then one could say that it is significantly wrong in describing galaxy rotation curves. And if it is wrong at this scale, it is surely very wrong on a cosmological scale.


    Rudi Van Nieuwenhove
     
  13. Dec 10, 2007 #12

    Garth

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    As I am likewise working on an alternative theory I appreciate the problem!

    I wish you well!

    :smile:

    Garth
     
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