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Renormalization group method and canonical perturbation theory

Yoshiyuki Y. Yamaguchi·Yasusada Nambu
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Abstract

Renormalization group method is one of the most powerful tool to obtain approximate solutions to differential equations. We apply the renormalization group method to Hamiltonian systems whose integrable parts linearly depend on action variables. We show that the renormalization group method gives the same approximate solutions as canonical perturbation theory up to the second order of a small parameter with action-angle coordinates.

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Yoshiyuki Y. Yamaguchi, Yasusada Nambu. 1999-02-16. Renormalization group method and canonical perturbation theory. https://arxiv.org/abs/chao-dyn/9902013

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