| Functional calculation of partition function and electron Green's function for a D-dimensional Hubbard model | |
| Liu, YL | |
| 2010-05-06 ; 2010-05-06 | |
| 关键词 | FALICOV-KIMBALL MODEL MONTE-CARLO CALCULATIONS BOSON-FERMION SYSTEMS MEAN-FIELD THEORY THERMODYNAMICS LATTICE STATE GAS Physics, Condensed Matter |
| 中文摘要 | Using the eigenfunctional method, we derive general functional expressions of the partition function and electron Green's function of the D-dimensional Hubbard model for zero and finite temperatures, in which the sign problem of fermions is avoided. These expressions can be calculated by solving the equation of a phase field and taking the functional average over a Lagrange multiplier field, while for some special cases they can be solved exactly. Moreover, we compare our results with the exact solution of the dynamical mean-field theory in the infinite-dimension limit. |
| 语种 | 英语 ; 英语 |
| 出版者 | AMERICAN PHYSICAL SOC ; COLLEGE PK ; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/14329]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Liu, YL. Functional calculation of partition function and electron Green's function for a D-dimensional Hubbard model[J],2010, 2010. |
| APA | Liu, YL.(2010).Functional calculation of partition function and electron Green's function for a D-dimensional Hubbard model.. |
| MLA | Liu, YL."Functional calculation of partition function and electron Green's function for a D-dimensional Hubbard model".(2010). |
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