Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Is the Universe holographic

  1. Mar 24, 2017 #1


    User Avatar
    Gold Member

    I thought that the holographic idea had been ruled out, But this article shows that it could be ruled in again.


    And this new research has implications for some fundamental problems in physics. So far, the study of gravity has largely defied efforts to bring it under the umbrella of quantum mechanics, but theorists continue to look for connections. "Our classical theory of gravity relies on knowing exactly the shape or geometry of space-time," Del Maestro says, but quantum mechanics requires uncertainty about this shape. A piece of the bridge between these may be formed by this new study's contribution to the "holographic principle": the exotic contention that the entire 3-D universe might be understood as two-dimensional information -- whether a gargantuan black hole or microscopic puddle of superfluid helium.
  2. jcsd
  3. Mar 25, 2017 #2
    What gave you the impression that holography has been ruled out?
  4. Mar 25, 2017 #3


    User Avatar
    Gold Member

  5. Mar 25, 2017 #4
    What I personally dislike about the hologram universe idea. is that while it certainly possible to describe a 3D object as a 2D matrix,
    that does not lead to the conclusion that our 3D perception is somehow wrong.
    You can describe any world you like really in just one dimension. as a series of binary bits.
  6. Apr 1, 2017 #5
    ^doesn't the whole black hole entropy growing with surface area thing suggest the 2d description is somehow more fundamental?
  7. Apr 1, 2017 #6
    When you don't know the answer, nothing can be 'ruled out'. That's like showing pictures of your safari before you go. That would be a nice trick.
  8. Apr 13, 2017 #7
    Even with an infinite number of bits, how could you describe a world with an infinite numbers of dimensions? You would only have 1 bit for each dimension.

    Let's say you can represent a 2D universe to some precision, possibly infinite. Isn't the point of the holographic principle that, with the same amount of information, you will have less precision in describing a 3D geometry?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted