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Momentum-distribution critical exponents for the one-dimensional large-U Hubbard model in the thermodynamic limit
Qin, SJ; Yu, L; Qin, SJ , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY.
1996
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号54期号:3页码:1447-1450
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.
部门归属ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词Quantum Fluids Field Chain
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12608
专题理论物理所SCI论文
通讯作者Qin, SJ , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY.
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Qin, SJ,Yu, L,Qin, SJ , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY.. 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.
APA Qin, SJ,Yu, L,&Qin, SJ , INT CTR THEORET PHYS,POB 586,I-34100 TRIESTE,ITALY..(1996).Momentum-distribution critical exponents for the one-dimensional large-U Hubbard model in the thermodynamic limit.PHYSICAL REVIEW B,54(3),1447-1450.
MLA Qin, SJ,et al."Momentum-distribution critical exponents for the one-dimensional large-U Hubbard model in the thermodynamic limit".PHYSICAL REVIEW B 54.3(1996):1447-1450.
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