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Quantum systems without a classical limit

  1. Oct 28, 2011 #1
    in the literature, people are talking about 'quantum systems without a classical limit'

    could anyone give me an example?
  2. jcsd
  3. Oct 28, 2011 #2


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    There are no examples given in "the literature" that you read?

  4. Oct 31, 2011 #3


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    Spin one-half. Or a system of coupled spin one-halfs.
  5. Oct 31, 2011 #4

    Ken G

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    I'm not sure what is meant by "no classical limit." A white dwarf star in a sense is not a classical limit, even though it is a huge number of particles, but if you heat it up high enough it would explode and be a very classical type Ia supernova.
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