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Klein-Gordon Lagrange density

  1. Oct 11, 2008 #1
    Does the Klein-Gordon Lagrange density maximize or minimise the solution of the Klein-Gordon equation?
  2. jcsd
  3. Oct 11, 2008 #2


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    This doesn't make sense. Are you asking whether the solution of the Klein-Gordon equation maximizes or minimizes the Klein-Gordon action?
  4. Oct 12, 2008 #3
    Ah yes that's what I meant to ask, I have a foreign lecturer and he's not always that clear with his questions.

  5. Oct 12, 2008 #4


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    Then if that's what you want to know you have to examine the 2nd (functional) derivative of the action with respect to the fields.
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