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Jan
28
comment Why are there only derivatives to the first order in the Lagrangian?
Thanks for the answer. Unfortunately the paper seems to involve involves Gauge theory, something which I'm not very familiar with. I was hoping for a simple example form classical mechanics which involves a higher order Lagrangian. Or perhaps I need to venture beyond mechanics to find a solution?
Jan
28
comment Why are there only derivatives to the first order in the Lagrangian?
If you are right, then my answer is wrong. Could you provide an example of a Lagrangian which involves higher derivatives?