2003/11/12 by Satoshi Nishimoto, Eric Jeckelmann · 3 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/16/4/010
published as J. Phys.: Condens. Matter 16 (2004) 613-625. · 16 pages, 6 figures, submitted to Journal of Physics: Condensed Matter
arxiv created 2003/11/12 · openalex publication_date 2004/01/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
A dynamic density-matrix renormalization group approach to the spectral properties of quantum impurity problems is presented. The method is demonstrated on the spectral density of the flat-band symmetric single-impurity Anderson model. We show that this approach provides the impurity spectral density for all frequencies and coupling strengths. In particular, Hubbard satellites at high energy can be obtained with a good resolution. The main difficulties are the necessary discretization of the host band hybridized with the impurity and the resolution of sharp spectral features such as the Abrikosov–Suhl resonance.