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Pertubations To Helmholtz Equation

  1. Mar 18, 2014 #1
    Consider the Helmholtz Equations with a perturbation p(r)

    [gradient^2 + p(r) + omega^2/c(r)^2 ]u(r,w) = 0

    Does anyone know where I can find resources to the solutions/discussion of this equation? I can find many things such that p(r) = 0 , but the RHS = forcing function, but that is not what I want.

    Likewise, any resources pertaining to the wave equation with a perturbation would also be nice

    [gradient^2 + p(r) - 1/c(r)^2 * del^2/delT^2]u(r,t) = 0
  2. jcsd
  3. Mar 27, 2014 #2
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