ONE-DIMENSIONAL LARGE-U HUBBARD-MODEL IN STRONG COUPLING - CHARGE AND SPIN SEPARATION

被引：0

作者：

WENG, ZY

SHENG, DN

TING, CS

机构：

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1991年 / 5卷 / 10期

关键词：

D O I：

10.1142/S021797929100170X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A path-integral formalism of the Hubbard model is used to study the one-dimensional large-U case. It is shown that the bare electron (hole) becomes a composite particle of two decoupled excitations, holon and spinon, together with the non-local string fields. Various correlation functions are analytically derived. The results strongly suggest a U* = infinity fixed point of Hubbard model which is distinct from the weak coupling case.

引用

页码：1801 / 1807

页数：7