Density matrix formulation for quantum renormalization groups
- 9 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (19), 2863-2866
- https://doi.org/10.1103/physrevlett.69.2863
Abstract
A generalization of the numerical renormalization-group procedure used first by Wilson for the Kondo problem is presented. It is shown that this formulation is optimal in a certain sense. As a demonstration of the effectiveness of this approach, results from numerical real-space renormalization-group calculations for Heisenberg chains are presented.Keywords
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