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QIN, SJ ; LIANG, SD; SU, ZB; YU, L; QIN, SJ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
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| DENSITY-MATRIX RENORMALIZATION-GROUP CALCULATION OF CORRELATION-FUNCTIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL | |
| Source Publication | PHYSICAL REVIEW B
 |
| Keyword | Momentum Distribution Correlation Exponents Heisenberg Chain Quantum Fluids Field Systems |
| Abstract | We have studied correlation functions of the one-dimensional Hubbard model using the density-matrix numerical renormalization-group approach. The singularity exponents of the momentum distribution at k=k(F) and 3k(F), as well as the power-law singularity of the spin-correlation function, are computed for large U (U/t=10(3)). The momentum-distribution exponent at k=k(F) and the spin-correlation exponent are in agreement with the analytic results, while the calculated exponent for momentum distribution at k=3k(F) is about 3/4, which disagrees with the analytically predicted value 9/8. We also discuss several techniques for an accurate calculation of the correlation functions. |
| 1995 | |
| ISSN | 0163-1829 |
| Volume | 52Issue:8Pages:R5475-R5478 |
| Subject Area | Physics |
| Indexed By | SCI |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/11714 |
| Collection | 理论物理所科研产出_SCI论文 |
| Corresponding Author | QIN, SJ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA. |
| Recommended Citation GB/T 7714 | QIN, SJ,LIANG, SD,SU, ZB,et al. DENSITY-MATRIX RENORMALIZATION-GROUP CALCULATION OF CORRELATION-FUNCTIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL[J]. PHYSICAL REVIEW B,1995,52(8):R5475-R5478. |
| APA | QIN, SJ,LIANG, SD,SU, ZB,YU, L,&QIN, SJ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1995).DENSITY-MATRIX RENORMALIZATION-GROUP CALCULATION OF CORRELATION-FUNCTIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL.PHYSICAL REVIEW B,52(8),R5475-R5478. |
| MLA | QIN, SJ,et al."DENSITY-MATRIX RENORMALIZATION-GROUP CALCULATION OF CORRELATION-FUNCTIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL".PHYSICAL REVIEW B 52.8(1995):R5475-R5478. |
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