One-Particle Excitation Spectrum for the One-Dimensional Hubbard Model at Low Temperature

1976 ◽  
Vol 73 (2) ◽  
pp. K145-K148
Author(s):  
I. D. Mikhailov ◽  
I. Yu. Shelestina
Keyword(s):  
Low Temperature ◽  
Hubbard Model ◽  
Excitation Spectrum ◽  
One Dimensional ◽  
The One

Application of the Landau-Luttinger Liquid Formulation to the Study of the Magnetic Properties of the 1-D Hubbard Model

1991 ◽  
Vol 05 (01n02) ◽  
pp. 3-30 ◽  
Author(s):  
J. Carmelo ◽  
P. Horsch ◽  
P.A. Bares ◽  
A.A. Ovchinnikov
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Low Temperature ◽  
Hubbard Model ◽  
Luttinger Liquid ◽  
Liquid Formulation ◽  
One Dimensional ◽  
Spin Excitations ◽  
Arbitrary Strength ◽  
The One

The Landau-Luttinger liquid formulation is used to investigate the physics of the one-dimensional Hubbard model in a magnetic field of arbitrary strength H. The low lying charge and spin excitations are studied. A novel branch of sound wave-like spin excitations arises for H>0. The low temperature thermodynamics is considered in some detail.

scholarly journals Renormalization Group Approach to the One–Dimensional 1/4–Filled Hubbard Model with Alternating on–Site Interactions

1997 ◽  
Vol 11 (16) ◽  
pp. 1925-1936 ◽  
Author(s):  
G. Jackeli ◽  
G. Japaridze
Keyword(s):  
Renormalization Group ◽  
Hubbard Model ◽  
Excitation Spectrum ◽  
Nearest Neighbor ◽  
Coupling Constants ◽  
Antiferromagnetic Order ◽  
One Dimensional ◽  
Dynamical Generation ◽  
Renormalization Group Approach ◽  
The One

The one-dimensional Hubbard model with different on-site interactions is investigated by renormalization group technique. In the case of a 1/4-filled band the dynamical nonequivalence of sites leads to the appearance of Umklapp processes in the system, and to the dynamical generation of a gap in the charge excitation spectrum for Ua≠Ub, Ua>0 or Ub>0. The ground-state phase diagram is obtained in the limit of second order renormalization. Depending on the sign and relative values of the bare coupling constants, there is a gap in the spin or charge excitation spectrum, and the model system tends to superconducting or antiferromagnetic order at T=0, with doubled period. The role of interaction between particles on nearest and next-nearest neighbor sites is also considered.

scholarly journals Antiferromagnetic fluctuations in the one-dimensional Hubbard model

AIP Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 125127
Author(s):  
Václav Janiš ◽  
Antonín Klíč ◽  
Jiawei Yan
Keyword(s):  
Hubbard Model ◽  
One Dimensional ◽  
The One
Sign in / Sign up

Export Citation Format

Share Document