Journal
PHYSICAL REVIEW B
Volume 62, Issue 7, Pages 4191-4193Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.62.4191
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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.
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