2 RIGOROUS THEOREMS ON THE MOMENTUM DISTRIBUTION-FUNCTIONS OF THE HUBBARD-MODEL AT HALF-FILLING

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	TIAN, GS; TIAN, GS , BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA.
	2 RIGOROUS THEOREMS ON THE MOMENTUM DISTRIBUTION-FUNCTIONS OF THE HUBBARD-MODEL AT HALF-FILLING
发表期刊	JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
关键词	T-j Model Luttinger Model Superconductivity
摘要	In this article, based on a recent theorem by Lieb et al, we shall prove two theorems on the momentum distribution functions of the half-filled Hubbard model on a d-dimensional simple cubic lattice in a mathematically rigorous way. More precisely, we shall first show that the half-filled positive-U and negative-U Hubbard models have the same momentum distribution functions n up (q) and n down (q). Then, we will show that n(sigma) (q) are symmetric functions about the value nBAR = 1/2. Finally, we shall briefly discuss some possible applications of these theorems to the further numerical investigations on the ground state of the Hubbard model at half-filling.
	1994
ISSN	0305-4470
卷号	27 期号:11 页码:3635-3642
学科领域	Physics
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/11896
专题	理论物理所科研产出_SCI论文
通讯作者	TIAN, GS , BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	TIAN, GS,TIAN, GS , BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA.. 2 RIGOROUS THEOREMS ON THE MOMENTUM DISTRIBUTION-FUNCTIONS OF THE HUBBARD-MODEL AT HALF-FILLING[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL,1994,27(11):3635-3642.
APA	TIAN, GS,&TIAN, GS , BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA..(1994).2 RIGOROUS THEOREMS ON THE MOMENTUM DISTRIBUTION-FUNCTIONS OF THE HUBBARD-MODEL AT HALF-FILLING.JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL,27(11),3635-3642.
MLA	TIAN, GS,et al."2 RIGOROUS THEOREMS ON THE MOMENTUM DISTRIBUTION-FUNCTIONS OF THE HUBBARD-MODEL AT HALF-FILLING".JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 27.11(1994):3635-3642.

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