scholarly journals Cluster dynamical mean-field study of the Hubbard model on a 3D frustrated hyperkagome lattice

2009 ◽  
Vol 145 ◽  
pp. 012013 ◽  
Author(s):  
Masafumi Udagawa ◽  
Yukitoshi Motome
Keyword(s):  
Hubbard Model ◽  
Field Study ◽  
Mean Field

scholarly journals Mean field study of the topological Haldane-Hubbard model of spin-12fermions

2016 ◽  
Vol 93 (11) ◽  
Author(s):  
V. S. Arun ◽  
R. Sohal ◽  
C. Hickey ◽  
A. Paramekanti
Keyword(s):  
Hubbard Model ◽  
Field Study ◽  
Mean Field

Cellular Dynamical Mean Field Study on Two-Orbital Hubbard Model with Different Bandwidths

2010 ◽  
Vol 79 (1) ◽  
pp. 014713 ◽  
Author(s):  
Tomoko Kita ◽  
Takuma Ohashi ◽  
Sei-ichiro Suga
Keyword(s):  
Hubbard Model ◽  
Field Study ◽  
Mean Field

scholarly journals Band Degeneracy and the Mott Transition: Dynamical Mean Field Study

1997 ◽  
Vol 11 (06) ◽  
pp. 729-751 ◽  
Author(s):  
Henrik Kajueter ◽  
Gabriel Kotliar
Keyword(s):  
Hubbard Model ◽  
Field Study ◽  
Mean Field ◽  
Mott Transition ◽  
Band Model ◽  
Infinite Dimensions ◽  
Orbital Degeneracy ◽  
Atomic Exchange ◽  
The One

We investigate the Mott transition in infinite dimensions in the orbitally degenerate Hubbard model. We find that the qualitative features of the Mott transition found in the one-band model are also present in the orbitally degenerate case. Surprisingly, the quantitative aspects of the density driven Mott transition around density one are not very sensitive to orbital degeneracy, justifying the quantitative success of the one-band model which was previously applied to orbitally degenerate systems. We contrast this with quantities that have a sizeable dependence on the orbital degeneracy and comment on the role of the intra-atomic exchange J.

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