THE YANGIAN SYMMETRY OF THE HUBBARD-MODEL

被引：86
|
作者：
UGLOV, DB
KOREPIN, VE
机构：
[1] Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook
来源：
PHYSICS LETTERS A | 1994年 / 190卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0375-9601(94)90748-X
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have found a new hidden symmetry of the one-dimensional Hubbard model. We show that the one-dimensional Hubbard model on an infinite chain has an infinite-dimensional algebra of symmetries. This algebra is a direct sum of two sl(2)-Yangians. This Y(sl(2))+Y(sl(2)) symmetry is an extension of the well-known sl(2)+sl(2) one. The deformation parameters of the Yangians are proportional to the coupling constant of the Hubbard model Hamiltonian.
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页码：238 / 242
页数：5
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