A density matrix renormalization group approach to interacting quantum systems on Cayley trees

被引：27
|
作者：
Friedman, B
机构：
[1] UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204
[2] UNIV HOUSTON,TEXAS CTR SUPERCONDUCT,HOUSTON,TX 77204
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 42期
关键词：
D O I：
10.1088/0953-8984/9/42/016
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
I have examined the nearest-neighbour quantum Heisenberg model on a Cayley tree using a simple density matrix renormalization group scheme. For spin 1/2 on a three-legged Bethe lattice I find indications of long-range antiferromagnetic order in agreement with the spin wave result. Preliminary calculations using a more complicated density matrix renormalization group scheme give promise that one can treat interacting quantum systems on Cayley trees very accurately.
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页码：9021 / 9029
页数：9
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