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Advanced Physics Homework Help
How to figure out Perturbed Lagrangians?
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[QUOTE="Hybird, post: 2247745, member: 25449"] I hope this is the right area to ask this, but does anyone know of a good link which describes perturbation theory? Or even a good book? I have a lagrangian that is a function of the vector potential and I need to figure out the perturbed lagrangian by perturbing the vector potential. That is, I need to figure out Delta of Lagrangian of Vector Potential. Or how to I figure out: dL = L(A+dA) - L(A) = ? Say L = 2A + K Would it work the same way differentials are taken? How do you figure out: L(A+dA) ? Clearly I'm missing something here! [/QUOTE]
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How to figure out Perturbed Lagrangians?
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