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Phys. Rev. B 69, 041102 (2004) [4 pages]

High-energy dynamics of the single-impurity Anderson model

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Carsten Raas1, Götz S. Uhrig1, and Frithjof B. Anders2
1Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, 50937 Köln, Germany
2Institut für Theoretische Physik, Universität Bremen, 28334 Bremen, Germany

Rapid Communication Received 1 December 2003; published 26 January 2004

The quantitative control of the dynamic correlations of single impurity Anderson models is essential in several very active fields. We analyze the one-particle Green function with a constant energy resolution by dynamic density-matrix renormalization. In contrast to other approaches, sharp dominant resonances at high energies are found. Their origin and importance are discussed.


©2004 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevB.69.041102
DOI: 10.1103/PhysRevB.69.041102
PACS: 71.55.Ak, 71.27.+a, 71.28.+d, 78.67.Hc

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