Bilinear response

  • Thread starter hokhani
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  • #1
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Main Question or Discussion Point

I don't know what is "bilinear responce". I would be grateful for any help.
 

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  • #2
DrDu
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Context?
 
  • #3
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Context?
Yes, I saw the term "bilinear response" in a paper and I don't understand it.
 
  • #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
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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