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The cat who everybody here probably is tired of

  1. Mar 20, 2007 #1

    Schrodingers cat.

    Lets say that the cat and everything within the box are in a pure state. Then it should be neither dead nor alive until you open the box. Ie you are the first to interact with the system when you open the box.

    As I have understood it this seems plausible. It has already been proven with a system involving many electrons. (http://www.amherst.edu/~jrfriedman/Scientific American/scientific-american edited.html)

    Decoherence is the reason we cannot realise this experiment since the cat interacts with its surroundings and becomes a mixed state.

    Now what is wrong with these statements and what is lacking?

    What exactly is a pure or a mixed state?

    Can you have a combination of pure states which still are pure?

    Do I need to learn Dirac notation?
  2. jcsd
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