The phase diagram of an exactly solvable t-J ladder model

被引:19
|
作者
Frahm, H [1 ]
Kundu, A
机构
[1] Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany
[2] Saha Inst Nucl Phys, Theory Grp, Calcutta 700064, W Bengal, India
关键词
D O I
10.1088/0953-8984/11/50/101
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We study a system of one-dimensional t-J models coupled to a ladder system. A special choice of the interaction between neighbouring rungs leads to an integrable model with supersymmetry, which is broken by the presence of rung interactions. We analyse the spectrum of low-lying excitations and the ground-state phase diagram at zero temperature.
引用
收藏
页码:L557 / L562
页数:6
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