Journal
SOLID STATE COMMUNICATIONS
Volume 145, Issue 11-12, Pages 585-589Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2007.12.031
Keywords
quantum dots; disordered systems; electron-electron interactions
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The particle-hole version of the density-matrix renormalization-group method (PH-DMRG) is utilized to calculate the ground-state energy of an interacting two-dimensional quantum dot. We show that a modification of the method, termed generation-based PH-DMRG, leads to significant improvement of the results, and discuss its feasibility for the treatment of large systems. As another application we calculate the addition spectrum. (C) 2008 Elsevier Ltd. All rights reserved.
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