scholarly journals Momentum-distribution critical exponents for the one-dimensional large-UHubbard model in the thermodynamic limit

1996 ◽  
Vol 54 (3) ◽  
pp. 1447-1450 ◽  
Author(s):  
Shaojin Qin ◽  
Lu Yu
Keyword(s):  
Thermodynamic Limit ◽  
Momentum Distribution ◽  
Critical Exponents ◽  
One Dimensional ◽  
The One

scholarly journals MOMENTUM DISTRIBUTION OF ITINERANT ELECTRONS IN THE ONE-DIMENSIONAL FALICOV–KIMBALL MODEL

2003 ◽  
Vol 17 (27) ◽  
pp. 4897-4911 ◽  
Author(s):  
PAVOL FARKAŠOVSKÝ
Keyword(s):  
Momentum Distribution ◽  
Ground States ◽  
Local Maximum ◽  
Singular Behavior ◽  
Coulomb Interactions ◽  
Unusual Behavior ◽  
One Dimensional ◽  
Itinerant Electrons ◽  
Half Filling ◽  
The One

The momentum distribution nk of itinerant electrons in the one-dimensional Falicov–Kimball model is calculated for various ground-state phases. In particular, we examine the periodic phases with period two, three and four (that are ground-states for all Coulomb interactions) as well as the phase separated states (that are ground states for small Coulomb interactions). For all periodic phases examined the momentum distribution is a smooth function of k with no sign of any discontinuity or singular behavior at the Fermi surface k=kF. An unusual behavior of nk (a local maximum) is found at k=3kF for electron concentrations outside half-filling. For the phase separated ground states the momentum distribution nk exhibits discontinuity at k=k0<kF. This behavior is interpreted in terms of a Fermi liquid.

THE ROLE OF QUASI-ONE-DIMENSIONAL STRUCTURES IN HIGH-Tc SUPERCONDUCTIVITY

1989 ◽  
Vol 03 (03) ◽  
pp. 427-439 ◽  
Author(s):  
N. M. BOGOLIUBOV ◽  
V. E. KOREPIN
Keyword(s):  
Critical Temperature ◽  
Critical Exponents ◽  
Electron Tunneling ◽  
Dimensional System ◽  
Cooper Pairs ◽  
High Tc ◽  
Mean Values ◽  
One Dimensional ◽  
The One

The critical exponents describing the decrease of correlation functions on long distances for the one-dimensional Hubbard model is obtained. The behaviour of correlators shows that Cooper pairs of electrons are formed. The electron tunneling between the chains leads to the existence of the anomalous mean values and to the superconductive current. The anisotropy of the quasi-one-dimensional system leads to the rise of critical temperature T c .

scholarly journals Critical exponents for the one-dimensional Hubbard model

1990 ◽  
Vol 42 (16) ◽  
pp. 10553-10565 ◽  
Author(s):  
Holger Frahm ◽  
V. E. Korepin
Keyword(s):  
Hubbard Model ◽  
Critical Exponents ◽  
One Dimensional ◽  
The One

Anamorphic concentration of solar radiation beyond the one-dimensional thermodynamic limit

2000 ◽  
Vol 39 (22) ◽  
pp. 3963 ◽  
Author(s):  
Nir Davidson ◽  
Lev Khaykovich ◽  
Erez Hasman
Keyword(s):  
Solar Radiation ◽  
Thermodynamic Limit ◽  
One Dimensional ◽  
The One
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