The Renormalization Group and Singular Perturbations: Multiple-Scales, Boundary Layers and Reductive Perturbation Theory

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dc.creatorChen, Lin-Yuan
dc.creatorGoldenfeld, Nigel
dc.creatorOono, Y.
dc.date1995-06-23
dc.date.accessioned2026-07-07T12:03:48Z
dc.date.available2026-07-07T12:03:48Z
dc.descriptionPerturbative renormalization group theory is developed as a unified tool for global asymptotic analysis. With numerous examples, we illustrate its application to ordinary differential equation problems involving multiple scales, boundary layers with technically difficult asymptotic matching, and WKB analysis. In contrast to conventional methods, the renormalization group approach requires neither {\it ad hoc\/} assumptions about the structure of perturbation series nor the use of asymptotic matching. Our renormalization group approach provides approximate solutions which are practically superior to those obtained conventionally, although the latter can be reproduced, if desired, by appropriate expansion of the renormalization group approximant. We show that the renormalization group equation may be interpreted as an amplitude equation, and from this point of view develop reductive perturbation theory for partial differential equations describing spatially-extended systems near bifurcation points, deriving both amplitude equations and the center manifold.
dc.description44 pages, 2 Postscript figures, macro \uiucmac.tex available at macro archives or at ftp://gijoe.mrl.uiuc.edu/pub
dc.identifierhttps://arxiv.org/abs/hep-th/9506161
dc.identifierhttp://arxiv.org/abs/hep-th/9506161
dc.identifierPhys.Rev.E54:376-394,1996
dc.identifierdoi:10.1103/PhysRevE.54.376
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207916
dc.subjectHigh Energy Physics - Theory
dc.subjectCondensed Matter
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleThe Renormalization Group and Singular Perturbations: Multiple-Scales, Boundary Layers and Reductive Perturbation Theory
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