Renormalization group method for quasi-one-dimensional quantum Hamiltonians

被引：15
|
作者：
Moukouri, S [1 ]
Caron, LG
机构：
[1] Univ Michigan, Michigan Ctr Theoret Phys, Randall Lab 2477, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Phys, Randall Lab 2477, Ann Arbor, MI 48109 USA
[3] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada
[4] Univ Paris 06, Phys Solides Grp, F-75252 Paris 05, France
来源：
PHYSICAL REVIEW B | 2003年 / 67卷 / 09期
关键词：
D O I：
10.1103/PhysRevB.67.092405
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A density-matrix renormalization-group (DMRG) method for highly anisotropic two-dimensional (2D) systems is presented. The method consists of applying the usual DMRG in two steps. In the first step, a pure one-dimensional calculation along the longitudinal direction is made in order to generate a low-energy Hamiltonian. In the second step, the anisotropic 2D lattice is obtained by coupling in the transverse direction the 1D Hamiltonians. The method is applied to the anisotropic quantum spin-half Heisenberg model on a square lattice.
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页数：4
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