arXiv:cond-mat/0004222 · Physical review. B, Condensed matter

Density-matrix spectra for two-dimensional quantum systems

Ming-Chiang Chung, Ingo Peschel

Published Aug 15, 2000• 93 citations

Abstract

For a two-dimensional system of coupled oscillators, the spectra of reduced density matrices can be obtained analytically. This provides an example where the features of these quantities, which are of central importance in numerical studies using the density-matrix renormalization-group method, can be seen

DOI: 10.1103/physrevb.62.4191

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