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Green function for KG equation

  1. May 14, 2010 #1
    There exists very simple formula for Green function for wave equation:
    [tex] G(t,x,t',x') = \delta (t-t'\pm \frac{|x-x'|}{c})/|x-x'| [/tex].
    I wonder whether there exist similiar formula for Green function
    for Klein-Gordon equation (with mass >0) for any boundary condition.
  2. jcsd
  3. May 14, 2010 #2
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