scholarly journals Weak-coupling phase diagram of the two-chain Hubbard model

1996 ◽  
Vol 53 (18) ◽  
pp. 12133-12141 ◽  
Author(s):  
Leon Balents ◽  
Matthew P. A. Fisher
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Weak Coupling ◽  
Coupling Phase

THE RELATION BETWEEN CHIRAL SYMMETRY SPONTANEOUSLY BREAKING AND CONFINEMENT IN QED

2001 ◽  
Vol 16 (12) ◽  
pp. 2253-2266
Author(s):  
KOU SU-PENG
Keyword(s):  
Strong Coupling ◽  
Chiral Symmetry ◽  
Dimensional Reduction ◽  
Weak Coupling ◽  
Coupling Phase ◽  
Fermion Pairs ◽  
Two Phases

In this paper, we use Parisi and Sourlas dimensional reduction to show that QED has two phases, the strong coupling phase and weak coupling phase. Because chiral symmetry is spontaneously broken, particles with fractional charges are confined in the strong coupling phase by the condensation of topological configurations, and particles with integer charges are screened by fermion pairs.

Superconducting pairing of the extended multiband Hubbard model: A weak-coupling study

1990 ◽  
Vol 41 (1) ◽  
pp. 853-856 ◽  
Author(s):  
R. Putz ◽  
B. Ehlers ◽  
L. Lilly ◽  
A. Muramatsu ◽  
W. Hanke
Keyword(s):  
Hubbard Model ◽  
Weak Coupling ◽  
Superconducting Pairing

scholarly journals Phase diagram of the Bose-Hubbard Model

1994 ◽  
Vol 26 (7) ◽  
pp. 545-550 ◽  
Author(s):  
J. K Freericks ◽  
H Monien
Keyword(s):  
Phase Diagram ◽  
Hubbard Model

Phase diagram of an extended Hubbard model with correlated hopping at half filling

1995 ◽  
Vol 51 (19) ◽  
pp. 13774-13777 ◽  
Author(s):  
A. A. Aligia ◽  
Liliana Arrachea ◽  
E. R. Gagliano
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Extended Hubbard Model ◽  
Half Filling
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