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Bilinear response

  1. Feb 11, 2015 #1
    I don't know what is "bilinear responce". I would be grateful for any help.
     
  2. jcsd
  3. Feb 11, 2015 #2

    DrDu

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    Context?
     
  4. Feb 11, 2015 #3
    Yes, I saw the term "bilinear response" in a paper and I don't understand it.
     
  5. Feb 11, 2015 #4

    DrDu

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    "In a paper". Do you think this is helpful? Maybe you could give a citation and quote the relevant part?
     
  6. Feb 11, 2015 #5
  7. Feb 12, 2015 #6

    DrDu

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    It means that it is linear in both ##\delta X_1## and ##\delta X_2##. This is generally used for expressions of the form xy. Also the scalar product ##\langle \phi|\psi \rangle ## is bilinear in ##\psi## and ##\phi^*##.
     
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