Re: No Planck limit for time!???

From: scerir (scerir@libero.it)
Date: Fri Feb 21 2003 - 16:09:32 MST

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    > "The Big Bang theory supposes that at the instant of creation, the
    > quantum singularity that became the universe would need to have infinite
    > density and temperature."

    Btw, many years ago somebody performed real experiments following
    another idea. Unfortunately I've lost references and results. But,
    I suppose, many authors already performed similar experiments in their
    s.f. books!

    Let us imagine it is possible to build a consistent model
    of photons (and gravitons? why not?), with a "retarded" wave
    (from the past to the future) plus an "advanced" wave (from the
    future to the past). Ok it is the usual Feynman-Wheeler approach.

    But the "advanced" wave (we can imagine) needs the "existence" of
    a "target". Because the photon comes into existence if there is a
    "source" (emitter of the retarded wave) and also a "target" (emitter
    of the advanced wave).

    I remember that John Bell, talking with Davies, told him that a
    "super-determinism" would perhaps solve the business of QM (The Ghost
    in the Atom, page 47). Now the retarded + advanced waves model actually
    imposes a "super-determinism" on the universe.

    Now imagine there is a discrete and real "target" out there (hence
    in a different time).

    In example, assume the earth is x years old. An emitter of the retarded
    wave, far away from the earth, required (x light years ago) that the
    forming earth ("target") must emit the advanced wave backwards in time.

    A highly collimated laser radiating into the outer space, with
    a very very small angle, could show some effect. Because if waves were
    beamed, at various directions in the outer space, and some power
    fluctuations in the transmitter were observed, it could mean that the
    outer space is not uniform. That is to say that sometimes there are,
    or there are not, out there, "targets" receiving retarded waves and
    emitting advanced waves.

    Ok here we might find something similar to the Olbers' paradox! So,
    better to stop here.

    Oh no, wait. Sometimes science >> fiction. I do not remember if
    Greenberger or who else wrote that it is possible to write down
    a quantum state [I remember this state written on a blackboard]
    in which (not just 2 but) 3 particles are entangled in a very
    peculiar way. This one. If particle 1 is found to have the spin 'up',
    then particles 2 and 3 are entangled. If particle 1 is found to have
    the spin 'down', the particle 2 and 3 get disentangled. Now let us
    put particle 1 in a remote (say space-like separated) region.
    Yet a 'chance' event, befalling particle 1, strongly influences
    the mutual relationship betwwen particles 2 and 3!



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