scholarly journals Momentum-sector-selective metal-insulator transition in the eight-site dynamical mean-field approximation to the Hubbard model in two dimensions

2009 ◽  
Vol 80 (24) ◽  
Author(s):  
Emanuel Gull ◽  
Olivier Parcollet ◽  
Philipp Werner ◽  
Andrew J. Millis
Keyword(s):  
Hubbard Model ◽  
Mean Field ◽  
Field Approximation ◽  
Two Dimensions ◽  
Insulator Transition ◽  
Mean Field Approximation ◽  
Metal Insulator Transition ◽  
Metal Insulator

The metal-insulator transition in disordered tungsten bronzes. Results of an Anderson-Mott-Hubbard model

1996 ◽  
Vol 205-207 ◽  
pp. 32-42 ◽  
Author(s):  
H. Dücker ◽  
Th. Koslowski ◽  
W. von Messen ◽  
M.A. Tusch ◽  
D.E. Logan
Keyword(s):  
Hubbard Model ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator

scholarly journals Энергетический спектр и оптические свойства фуллерена C-=SUB=-80-=/SUB=-(I-=SUB=-h-=/SUB=-) в модели Хаббарда

2021 ◽  
Vol 129 (10) ◽  
pp. 1227
Author(s):  
А.В. Силантьев
Keyword(s):  
Group Theory ◽  
Hubbard Model ◽  
Symmetry Group ◽  
Mean Field ◽  
Analytical Form ◽  
Field Approximation ◽  
Energy Spectra ◽  
Mean Field Approximation ◽  
The Mean

The anticommutative Green’s functions were derived in an analytical form, and the energy spectra of С80 fullerene and endohedral Y3N@C80 fullerene of symmetry group Ih were obtained within the Hubbard model in the mean-field approximation. Using group theory methods, the classification of energy states was carried out, and the allowed transitions in the energy spectra of С80 and Y3N@C80 molecules of symmetry group Ih were determined.

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