A DMRG study of the q-symmetric Heisenberg chain

被引：0
|
作者：
Kaulke, M [1 ]
Peschel, I [1 ]
机构：
[1] Free Univ Berlin, Fachbereich Phys, Arnimallee 14, D-14195 Berlin, Germany
来源：
EUROPEAN PHYSICAL JOURNAL B | 1998年 / 5卷 / 03期
关键词：
D O I：
10.1007/s100510050496
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The spin one-half Heisenberg chain with U-q[SU(2)] symmetry is studied via density-matrix renormalization. Ground-state energy and q-symmetric correlation functions are calculated for the non-Hermitian case q = exp(i pi(r+1)) with integer r. This gives bulk and surface exponents for (para)fermionic correlations in the related Ising and Potts models. The case of real q corresponding to a diffusion problem is treated analytically.
引用
收藏
页码：727 / 734
页数：8
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