Non-canonical terms of scalar fields

  1. Hello! Well, I guess it's all in the title, really. I was reading about k-essence, and it was described as a scalar field having a non-canonical kinetic term. I did a bit of browsing and couldn't find a clear explanation of what, exactly, a non-canonical kinetic term is. Any help would be greatly appreciated! Thanks!
  2. jcsd
  3. Bill_K

    Bill_K 4,160
    Science Advisor

    I just peeked at probably the same paper you're reading, and it says that non-canonical kinetic energy means that instead of using X = ½∂μφ ∂μφ for the kinetic energy, he uses some function of it, F(X).
    1 person likes this.
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