周期性边界条件的一维t-J-V模型的精确解(英文)

The Exact Solution of One-dimensional t-J-V Model with Periodic Boundary Conditions

低维材料现在已经成为凝聚态物理研究领域中最能引起学者关注的方向之一,也是研究一维可积模型的动力源泉,而t-J模型是研究强关联电子系统的典型模型,也是低维材料中最典型的模型,本文中将研究t-J模型的扩展模型t-J-V模型的可积性条件,并且得到了当J=2,V=-2/1时以及J=-2,V=-23时模型是可积的,是可以严格求解的.

Low-dimensional materials can cause the most concern in condensed matter physics research fields and they have been an additional source of motivation to investigate one-dimensional exactly solvable models, t-J model is a typical model to study strongly ＇correlated electron system and in low-dimensional materials. We will study the integrability conditions of the t-J-V model, which is the expansion model of t-J model. We obtain that the model is -1 integrabl and has the strict solutions when J = 2 and V=-1/2 or J = -2 and V =-3/2.