Cluster perturbation theory for Hubbard models -: art. no. 075129

被引：192

作者：

Sénéchal, D ^{[1
]}

Perez, D ^{[1
]}

Plouffe, D ^{[1
]}

机构：

[1] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.66.075129

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cluster perturbation theory is a technique for calculating the spectral weight of Hubbard models of strongly correlated electrons, which combines exact diagonalizations on small clusters with strong-coupling perturbation theory at leading order. It is exact in both the strong- and weak-coupling limits and provides a good approximation to the spectral function at any wave vector. Following the paper by Senechal [Phys. Rev. Lett. 84, 522 (2000)], we provide a more complete description and derivation of the method. We illustrate some of its capabilities, in particular regarding the effect of doping, the calculation of ground state energy and double occupancy, the disappearance of the Fermi surface in the t-t(') Hubbard model, and so on. The method is applicable to any model with on-site repulsion only.

引用

页码：751291 / 7512911

页数：11

共 50 条

[41] Spectral moments of two-point correlators in perturbation theory and beyond -: art. no. 036001
Groote, S
Körner, JG
Pivovarov, AA
PHYSICAL REVIEW D, 2002, 65 (03)
[42] B→π and B→K transitions in standard and quenched chiral perturbation theory -: art. no. 054010
Becirevic, D
Prelovsek, S
Zupan, J
PHYSICAL REVIEW D, 2003, 67 (05)
[43] Nonequilibrium transport through a Kondo dot in a magnetic field:: Perturbation theory -: art. no. 155330
Paaske, J
Rosch, A
Wölfle, P
PHYSICAL REVIEW B, 2004, 69 (15) : 155330 - 1
[44] Gravitational corrections in supersymmetric gauge theory and matrix models -: art. no. 051
Klemm, A
Mariño, M
Theisen, S
JOURNAL OF HIGH ENERGY PHYSICS, 2003, (03):
[45] η-pairing superconductivity in the Hubbard chain with pair hopping -: art. no. 014518
Japaridze, GI
Kampf, AP
Sekania, M
Kakashvili, P
Brune, P
PHYSICAL REVIEW B, 2002, 65 (01) : 1 - 10
[46] Ultracold fermions and the SU(N) Hubbard model -: art. no. 170403
Honerkamp, C
Hofstetter, W
PHYSICAL REVIEW LETTERS, 2004, 92 (17) : 170403 - 1
[47] Dissipation effects in cluster fission -: art. no. 083401
Bréchignac, C
Cahuzac, P
Concina, B
Leygnier, J
PHYSICAL REVIEW LETTERS, 2004, 92 (08)
[48] Nonlocality of cluster states of qubits -: art. no. 042325
Scarani, V
Acín, A
Schenck, E
Aspelmeyer, M
PHYSICAL REVIEW A, 2005, 71 (04):
[49] Cluster model of decagonal tilings -: art. no. 214202
Reichert, M
Gähler, F
PHYSICAL REVIEW B, 2003, 68 (21):
[50] Third-order multireference perturbation theory:: The n-electron valence state perturbation-theory approach -: art. no. 054108
Angeli, C
Bories, B
Cavallini, A
Cimiraglia, R
JOURNAL OF CHEMICAL PHYSICS, 2006, 124 (05):

← 1 2 3 4 5 →