scholarly journals Strong-coupling perturbation theory for the two-dimensional Bose-Hubbard model in a magnetic field

1999 ◽  
Vol 60 (4) ◽  
pp. 2357-2362 ◽  
Author(s):  
M. Niemeyer ◽  
J. K. Freericks ◽  
H. Monien
Keyword(s):  
Magnetic Field ◽  
Perturbation Theory ◽  
Hubbard Model ◽  
Strong Coupling ◽  
Two Dimensional

A SINGLE HOLE IN THE TWO-DIMENSIONAL INFINITE-U HUBBARD MODEL IN AN ORBITAL MAGNETIC FIELD

1994 ◽  
Vol 08 (06) ◽  
pp. 707-725
Author(s):  
S. V. MESHKOV ◽  
J. C. ANGLÈS D'AURIAC
Keyword(s):  
Magnetic Field ◽  
Monte Carlo ◽  
Hubbard Model ◽  
Ground State ◽  
Quantum Monte Carlo ◽  
Applied Field ◽  
Monte Carlo Algorithm ◽  
Two Dimensional ◽  
Thermodynamical Properties ◽  
Single Hole

Using an original Quantum Monte Carlo algorithm, we study the thermodynamical properties of a single hole in the two-dimensional infinite-U Hubbard model at finite temperature. We investigate the energy and the spin correlators as a function of an external orbital magnetic field. This field is found to destroy the Nagaoka ferromagnetism and to induce chirality in the spin background. The applied field is partially screened by a fictitious magnetic field coming from the chirality. Our algorithm allows us to reach a temperature low enough to discuss the ground state properties of the model.

scholarly journals Magnetic-Field-induced Antiferromagnetism in Two-dimensional Hubbard Model: Analysis of CeRhIn5

2005 ◽  
Vol 74 (1) ◽  
pp. 271-274 ◽  
Author(s):  
Keitaro Sakurazawa ◽  
Hiroshi Kontani ◽  
Tetsuro Saso
Keyword(s):  
Magnetic Field ◽  
Hubbard Model ◽  
Model Analysis ◽  
Two Dimensional
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