Non-canonical terms of scalar fields

by TimeFall
Tags: fields, k-essence, noncanonical, scalar, scalar field, terms
TimeFall is offline
Feb5-14, 02:14 PM
P: 6
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!
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Bill_K is online now
Feb5-14, 02:28 PM
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P: 3,850
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 = ∂μφ ∂μφ for the kinetic energy, he uses some function of it, F(X).

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