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What does c.c. in equation represent?

  1. Aug 20, 2013 #1
    Hi, I am reading up on current injection in semiconductor and in the derivation of the current injection, the equation goes like this

    |K|2= ... +Eb(-w) + c.c.

    Does anyone knows what does c.c. represent?
     
  2. jcsd
  3. Aug 20, 2013 #2

    vela

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    Just a guess, but I'd go with complex conjugate.
     
  4. Aug 20, 2013 #3
    This one doesn't look like a complex conjugate, since it's an operation not an additive quantity.
    To OP: You just have to give more context, but the chances are that it's explained in the original text.
     
  5. Aug 20, 2013 #4

    vela

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    I'm not sure how you determined that. After all, there's a plus sign right before "c.c."
     
  6. Aug 20, 2013 #5
    The author is trying to derive the current injection into semiconductor via quantum interference. In his working before this, he is trying to expand a complex equation and the next step is the final result. He did not mention what the c.c. means so I am thinking it might be complex conjugate but I am not sure.

    My bad that I did not mention its a complex function :(
     
  7. Aug 21, 2013 #6
    It means complex conjugate of everything that's written down before it. So for example [tex] \psi_1^* \psi_2 + \psi_2^* \psi_3 + c.c. = \psi_1^* \psi_2 + \psi_1 \psi_2^* + \psi_2^* \psi_3 + \psi_2 \psi_3^* [/tex]
    Sometimes you also see "h.c.", which stands for hermitian conjugate.
     
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