Poor Schrödinger's cat

Discussion in 'Science' started by VicSavage, May 28, 2016.

  1. VicSavage

    VicSavage Member

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  2. JoakimFlorence

    JoakimFlorence Banned

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    To understand what is happening we have to break the properties of the particle up into two aspects: the wave-function and the point-like physical manifestation. Which of these aspects is truly "real" is a matter of philosophical speculation.

    The cat's wave-function is not confined to one location. The most widely accepted theory right now among scientists is that it's all relative. The cat may be in location A in my frame of reference, but in location B from a different frame of reference. Obviously the cat can't physically manifest in two places at once, so this can only hold true so long as the two different frames of reference are not "entangled". Actually, entanglement is all a matter of degree. This has some interesting theoretical ramifications. To try to explain it in a very simple way, basically I cannot simultaneously see the cat in location A while seeing you see the cat in location B. The point in time at which the ambiguity of the "cat" becomes entangled with the observer will affect the future physical manifestation of the "cat" because observable reality is statistically affected by the invissible wave-function.

    Just because you now know whether that cat is dead or alive does not necessarily mean the cat is not still simultaneously in both states from the perspective of an outside observer. Interesting to think about.
     
  3. sdelsolray

    sdelsolray Well-Known Member

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  4. VicSavage

    VicSavage Member

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    Mind blowing stuff! Nice post
     
  5. ryobi

    ryobi Well-Known Member

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    A cop pulls Schrodinger over and asks to look in his trunk, upon which the cop exclaims, "there's a dead cat in here!!!" and Schrodinger replies, "well there is now."
     
  6. Space_Time

    Space_Time Well-Known Member

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    Here's more:

    https://www.yahoo.com/news/schrodingers-cat-arrives-quantum-weirdness-gets-life-size-131149543.html

    Science
    Schrodinger's Cat Arrives? Quantum Weirdness Gets Life Size
    Tia Ghose, Senior Writer,LiveScience.com 4 hours ago Comments Sign in to like Reblog on Tumblr Share Tweet Email

    The quantum absurdity that leads to the notion of Schrodinger's cat — in which a cat can exist in two states simultaneously — could finally be tested in an object visible to the naked eye, a new study demonstrates.

    Scientists have created a pendulum-like membrane that is so perfectly isolated from friction and heat "that it would just keep going for 10 years with a single push," said study co-author Simon Gröblacher, a physicist at Delft University of Technology in the Netherlands. "If you create a quantum state in this object, it will not go away."

    This tiny, flea-size swing could allow scientists to finally test whether the quantum effects behind the Schrodinger's cat thought experiment do indeed exist at large scales. [How Quantum Entanglement Works]

    Cat in trouble
    In 1936, physicist Erwin Schrödinger proposed a now-famous thought experiment meant to highlight the bizarre implications of quantum mechanics. In his formulation, a cat is trapped in a box with a radioactive atom. If that atom decays, the cat will be poisoned and die, but if the atom has not decayed, the cat lives.

    The so-called Copenhagen interpretation of quantum mechanics implied that the radioactive atom is in two states at once, simultaneously decayed and undecayed, until some brave soul opens the box and measures or perturbs the atom. By extension, the cat would be both dead and alive at the same time, until the box was opened.

    The weird phenomenon, known as superposition, has been demonstrated time and again with tiny, subatomic particles. Yet scientists have never observed a cat, or any visible object, that was simultaneously in two states or places at once.

    Exactly why isn't clear, but scientists have a few hypotheses. One is that the laws of quantum mechanics simply break down at larger scales.

    However, that would mean current quantum theory is incomplete, Gröblacher said.

    "Quantum theory itself doesn't have any mass or size limit," at which its laws stop working, Gröblacher told Live Science.

    Most scientists instead believe that superposition is ephemeral; perturb it just a bit, and the whole state collapses. As objects get larger, they are much more likely to exchange heat with the environment, disturbing this delicate state.

    But hypothetically, at least, even very large objects could display these quantum effects, assuming you could isolate the objects well enough from their environments.
     

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