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Meaning of U

  1. Oct 8, 2006 #1
    Meaning of "U"

    If we have a One dimensional gas, so using [tex] \beta = \frac{1}{KT} [/tex]

    then we can define (if we knew partition function) the quantity U so:

    [tex] U= - \frac{\partial LnZ}{\partial \beta} [/tex]

    which is called "inner energy" if we call the potential of the particles V(x) my question is if somehow U (inner energy) is the derivative of a potential or something similar
  2. jcsd
  3. Oct 15, 2006 #2
    U is the internal energy of the system. Why would it be the derivative of a potential (which, by the way, is usually a force or force field)?
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