One-electron singular branch lines of the Hubbard chain

被引：30

作者：

Carmelo, JMP

Penc, K

Martelo, LM

Sacramento, PD

Dos Santos, JMBL

Claessen, R

Sing, M

Schwingenschlögl, U

机构：

[1] U Minho, Ctr Phys, GCEP, P-4710057 Braga, Portugal

[2] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[3] Univ Porto, Fac Engn, Dept Phys, P-4200465 Oporto, Portugal

[4] Inst Super Tecn, CFIF, P-1049001 Lisbon, Portugal

[5] U Porto, CFP, FC, P-4169007 Oporto, Portugal

[6] U Porto, FC, Dept Fis, P-4169007 Oporto, Portugal

[7] Univ Augsburg, D-86135 Augsburg, Germany

来源：

EUROPHYSICS LETTERS | 2004年 / 67卷 / 02期

关键词：

D O I：

10.1209/epl/i2004-10111-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The momentum and energy dependence of the weight distribution in the vicinity of the one-electron spectral-function singular branch lines of the 1D Hubbard model is studied for all values of the electronic density and on-site repulsion U. To achieve this goal, we use the recently introduced pseudofermion dynamical theory. Our predictions agree quantitatively for the whole momentum and energy bandwidth with the peak dispersions observed by angle-resolved photoelectron spectroscopy in the quasi-1D organic conductor TTF-TCNQ.

引用

页码：233 / 239

页数：7

共 15 条

[1] Electron addition spectrum in the supersymmetric t-J model with inverse-square interaction [J].