scholarly journals Interaction quench in the Hubbard model: Relaxation of the spectral function and the optical conductivity

2010 ◽  
Vol 81 (11) ◽  
Author(s):  
Martin Eckstein ◽  
Marcus Kollar ◽  
Philipp Werner
Keyword(s):  
Hubbard Model ◽  
Spectral Function ◽  
Optical Conductivity

A controlled route to the competing phases and the single-particle spectral function in the ground state of the 2D Hubbard model

2007 ◽  
Vol 460-462 ◽  
pp. 248-251
Author(s):  
Werner Hanke ◽  
Markus Aichhorn ◽  
Enrico Arrigoni ◽  
Michael Potthoff
Keyword(s):  
Hubbard Model ◽  
Spectral Function ◽  
Single Particle ◽  
Ground State

scholarly journals Optical conductivity of the infinite-dimensional Hubbard model

1995 ◽  
Vol 51 (17) ◽  
pp. 11704-11711 ◽  
Author(s):  
M. Jarrell ◽  
J. K. Freericks ◽  
Th. Pruschke
Keyword(s):  
Hubbard Model ◽  
Optical Conductivity ◽  
Infinite Dimensional

Optical conductivity of the Hubbard model

1997 ◽  
Vol 56 (3) ◽  
pp. 1141-1145 ◽  
Author(s):  
J. J. Vicente Alvarez ◽  
C. A. Balseiro ◽  
H. A. Ceccatto
Keyword(s):  
Hubbard Model ◽  
Optical Conductivity

scholarly journals Spectral function of the spiral spin state in the trestle and ladder Hubbard model

1998 ◽  
Vol 58 (18) ◽  
pp. R11833-R11836 ◽  
Author(s):  
Ryotaro Arita ◽  
Koichi Kusakabe ◽  
Kazuhiko Kuroki ◽  
Hideo Aoki
Keyword(s):  
Hubbard Model ◽  
Spectral Function ◽  
Spin State ◽  
Spiral Spin

scholarly journals Transport and optical conductivity in the Hubbard model: A high-temperature expansion perspective

2016 ◽  
Vol 94 (23) ◽  
Author(s):  
Edward Perepelitsky ◽  
Andrew Galatas ◽  
Jernej Mravlje ◽  
Rok Žitko ◽  
Ehsan Khatami ◽  
...  
Keyword(s):  
High Temperature ◽  
Hubbard Model ◽  
Optical Conductivity ◽  
Temperature Expansion ◽  
High Temperature Expansion

SINGLE-PARTICLE AND OPTICAL EXCITATIONS IN DOPED MOTT- HUBBARD INSULATORS

1992 ◽  
Vol 06 (05n06) ◽  
pp. 589-602 ◽  
Author(s):  
WALTER STEPHAN ◽  
PETER HORSCH
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Fermi Surface ◽  
Copper Oxide ◽  
Hubbard Model ◽  
Optical Conductivity ◽  
Single Particle ◽  
Oxide Superconductors ◽  
Two Dimensional ◽  
Copper Oxide Superconductors

Recent numerical results for the single-particle spectral function and optical conductivity of the two-dimensional Hubbard and t−J models are reviewed. Already for two holes in systems of sixteen to twenty sites (≥ 10% doping) a large electronic Fermi surface, compatible with Luttinger’s theorem, is observed. The full single-particle Green’s function is examined, and is shown to exhibit quasiparticle-like behavior, with dispersion consistent with the band structure of the non-interacting limit, and band width scaling approximately as J for J smaller than t. The optical conductivity of the Hubbard and t−J models is shown to have many features in common with recent experiments on copper oxide superconductors. The importance of the often neglected 3-site terms which arise in the derivation of the t−J model from the Hubbard model for optical properties is discussed.

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