Renormalization-group transformation for quantum lattice systems at zero temperature
- 1 March 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 19 (5) , 2656-2663
- https://doi.org/10.1103/physrevb.19.2656
Abstract
We propose a new renormalization-group (RG) method applicable to quantum systems defined on a lattice at zero temperature. We apply our method to the one-dimensional Ising model in a transverse field and the two-dimensional triangular Ising model in a transverse field. In both cases, a nontrivial fixed point of our RG transformation is found. Critical exponents are calculated and compared with exact and previous RG results.Keywords
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