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

Fine-Tuning from First Principles don't laugh

  1. Feb 21, 2006 #1
    It seems quite ludicrous to me that we have no stability mechanism that
    explains why an expanding universe doesn't just blow itself apart, and
    even then, the entropy of our near-flat universe is much less than it
    should be, given any practical model of structure forming turbulence
    that occurs with expansion.

    Unless far from equilibrium dissipative structures, like us humans and
    black holes serve to somehow enhance the entropic process, thereby
    repaying the *most apparent* entropic debt. Surely, the configuration
    of our universe must follow the least action principle, so it can't be
    that difficult.

    I think that the real problem with this lies in the fact that modern
    science doesn't generally view the universe as being finite, bounded and
    closed, and it doesn't consider space to be a physically connected
    entity, because the uniform expansion of the whole will necessarily
    entail the most-even distribution of energy possible, **within the
    constraints of inherent imperfection**... if the universe is causaly
    bound and bounded.

    Quantum mechanics depends very much on Hamiltonian mechanics, and so it
    isn't inherently able to describe dissipative structuring. As I
    understand it, this can be done, however, by way of the "Lindblad
    equation", which derives that flatness acts as a natural damper that
    keeps the imbalanced universe from evolving inhomogeneously, so this is
    the most natural configuration... IF the universe is finite and
    closed... given inherent asymmetry in the energy. This will necessarily
    maximize the time that the expansion process takes, and that's what a
    flat universe accomplishes via anthropic structuring.

    I do believe that the AP is telling us that the universe is finite,
    closed and bounded... only nobody listens.
  2. jcsd
  3. Feb 21, 2006 #2


    User Avatar
    Science Advisor
    Gold Member

    There are scenerios where the universe expands forever and ends up as a collection of cold dead stars, etc. In some variations, assuming the proton is unstable, then it is even less.

    Why turbulence???
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Fine-Tuning from First Principles don't laugh
  1. A Fine-tuned Universe (Replies: 4)

  2. Fine-tuning argument (Replies: 2)