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Numerical renormalization group method for quantum impurity systems

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Bulla, Ralf, Costi, Theo A., Pruschke, Thomas·2008·Reviews of Modern Physics

Abstract

In the early 1970s, Wilson developed the concept of a fully nonperturbative renormalization group transformation. When applied to the Kondo problem, this numerical renormalization group (NRG) method gave for the first time the full crossover from the high-temperature phase of a free spin to the low-temperature phase of a completely screened spin. The NRG method was later generalized to a variety of quantum impurity problems. The purpose of this review is to give a brief introduction to the NRG method, including some guidelines for calculating physical quantities, and to survey the development of the NRG method and its various applications over the last 30 years. These applications include variants of the original Kondo problem such as the non-Fermi-liquid behavior in the two-channel Kondo model, dissipative quantum systems such as the spin-boson model, and lattice systems in the framework of the dynamical mean-field theory.

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Metadata

Authors
Bulla, R., Costi, T. A., & Pruschke, T.
Venue
Reviews of Modern Physics
Published
2008-04-02
Volume
80
Issue
2
Pages
395-450
ISSN
  • 0034-6861 (ISSN-L)
  • 1539-0756
OpenAlex
W1973025658
Cited by
1,478
References
2
FWCI
54.14
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Numerical renormalization group method for quantum impurity systems. https://app.cochat.ai/papers/10.1103/revmodphys.80.395
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Bulla, R., Costi, T. A., & Pruschke, T. (2008). Numerical renormalization group method for quantum impurity systems. Reviews of Modern Physics. https://doi.org/10.1103/revmodphys.80.395

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