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题名: Momentum-distribution critical exponents for the one-dimensional large-U Hubbard model in the thermodynamic limit
作者: Qin, SJ ;  Yu, L
刊名: PHYSICAL REVIEW B
出版日期: 1996
卷号: 54, 期号:3, 页码:1447-1450
关键词: QUANTUM FLUIDS ;  FIELD ;  CHAIN
学科分类: Physics
通讯作者: Qin, SJ , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
英文摘要: The critical exponents of the momentum distribution near k(F), 3k(F), and 5k(F) are studied numerically for the one-dimensional U-->infinity Hubbard model, using finite-size systems and extrapolating them to the thermodynamic limit. Results at k(F) agree with earlier calculations, while at 3k(F), exponents less than 1 are obtained for finite-size systems with extrapolation to 1 (regular behavior) in the thermodynamic limit, in contrast to the earlier analytic prediction of 9/8. The distribution is regular at 5k(F) even for finite systems. The singularity near 3k(F) is interpreted as due to low-energy excitations near 3k(F) in finite systems.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12608
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Qin, SJ,Yu, L. Momentum-distribution critical exponents for the one-dimensional large-U Hubbard model in the thermodynamic limit[J]. PHYSICAL REVIEW B,1996,54(3):1447-1450.
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