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
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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.
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页码：1801 / 1807
页数：7
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