Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.52.14436
Title: X-ray-edge singularities with nonconstant density of states: A renormalization-group approach
Authors: Chen, K. 
Jayaprakash, C.
Issue Date: 1995
Citation: Chen, K., Jayaprakash, C. (1995). X-ray-edge singularities with nonconstant density of states: A renormalization-group approach. Physical Review B 52 (20) : 14436-14440. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.52.14436
Abstract: We present the results of a calculation of the x-ray absorption and photoemission spectra of metals based on the Wilson renormalization group (RG) (Wilson and co-workers) using free-electron, Lorentzian, and semicircular density of states. The deviation from the asymptotic singular behavior is studied. This illustrative calculation introduces an algorithm for obtaining a tridiagonalized (hopping) Hamiltonian from the logarithmically discretized conduction band. We provide a detailed description of the algorithm which renders the study of problems of impurities in metals with nonconstant conduction electron density of states using the RG method feasible. © 1995 The American Physical Society.
Source Title: Physical Review B
URI: http://scholarbank.nus.edu.sg/handle/10635/98611
ISSN: 01631829
DOI: 10.1103/PhysRevB.52.14436
Appears in Collections:Staff Publications

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