Abstract

This review covers several topics involving renormalization group ideas. The solution of the $s$-wave Kondo Hamiltonian, describing a single magnetic impurity in a nonmagnetic metal, is explained in detail. See Secs. VII-IX. "Block spin" methods, applied to the two dimensional Ising model, are explained in Sec. VI. The first three sections give a relatively short review of basic renormalization group ideas, mainly in the context of critical phenomena. The relationship of the modern renormalization group to the older problems of divergences in statistical mechanics and field theory and field theoretic renormalization is discussed in Sec. IV. In Sec. V the special case of "marginal variables" is discussed in detail, along with the relationship of the modern renormalization group to its original formulation by Gell-Mann and Low and others.

Keywords

PhysicsRenormalization groupRenormalizationDensity matrix renormalization groupIsing modelFunctional renormalization groupKondo effectHamiltonian (control theory)Critical phenomenaQuantum mechanicsTheoretical physicsMathematical physicsImpurityMathematics

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Year
1975
Type
article
Volume
47
Issue
4
Pages
773-840
Citations
4365
Access
Closed

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Kenneth G. Wilson (1975). The renormalization group: Critical phenomena and the Kondo problem. Reviews of Modern Physics , 47 (4) , 773-840. https://doi.org/10.1103/revmodphys.47.773

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DOI
10.1103/revmodphys.47.773