scholarly journals Entropy and specific heat of the infinite-dimensional three-orbital Hubbard model

2020 ◽  
Vol 102 (8) ◽  
Author(s):  
Changming Yue ◽  
Philipp Werner
Keyword(s):  
Hubbard Model ◽  
Specific Heat ◽  
Infinite Dimensional

A SELF-ENERGY FUNCTIONAL FOR THE INFINITE-DIMENSIONAL HUBBARD MODEL

1992 ◽  
Vol 06 (28) ◽  
pp. 1827-1833 ◽  
Author(s):  
Y.M. LI ◽  
N. d’AMBRUMENIL
Keyword(s):  
Hubbard Model ◽  
Specific Heat ◽  
Fermi Liquid ◽  
Natural Extension ◽  
Energy Functional ◽  
Symmetric Case ◽  
Kondo Temperature ◽  
Infinite Dimensional ◽  
Self Energy ◽  
Uncorrelated State

We present an approximate self-energy functional for the infinite-dimensional Hubbard model. This functional is a natural extension of the exact solution of the Falicov-Kimball model to the spin-symmetric case, and is exact in the uncorrelated and atomic limits. Using the functional we calculate the susceptibility and the specific heat for the Lorentzian density of states. We find that the susceptibility crosses over smoothly from that expected for an uncorrelated state with antiferromagnetic fluctuations to a Fermi liquid state at low temperature via a Kondo-type anomaly. The specific heat shows a peak at the corresponding Kondo temperature.

scholarly journals Pseudogap and the specific heat of high Tcsuperconductors: a Hubbard model in a n-pole approximation

2015 ◽  
Vol 592 ◽  
pp. 012075
Author(s):  
E J Calegari ◽  
A C Lausmann ◽  
S G Magalhaes ◽  
C M Chaves ◽  
A Troper
Keyword(s):  
Hubbard Model ◽  
Specific Heat ◽  
Pole Approximation

scholarly journals Transport Properties of the Infinite-Dimensional Hubbard Model

1993 ◽  
Vol 21 (5) ◽  
pp. 593-598 ◽  
Author(s):  
Th Pruschke ◽  
D. L Cox ◽  
M Jarrell
Keyword(s):  
Hubbard Model ◽  
Transport Properties ◽  
Infinite Dimensional

scholarly journals Optical conductivity of the infinite-dimensional Hubbard model

1995 ◽  
Vol 51 (17) ◽  
pp. 11704-11711 ◽  
Author(s):  
M. Jarrell ◽  
J. K. Freericks ◽  
Th. Pruschke
Keyword(s):  
Hubbard Model ◽  
Optical Conductivity ◽  
Infinite Dimensional

Hubbard model on the infinite-dimensional diamond lattice

1993 ◽  
Vol 47 (24) ◽  
pp. 16216-16221 ◽  
Author(s):  
G. Santoro ◽  
M. Airoldi ◽  
S. Sorella ◽  
E. Tosatti
Keyword(s):  
Hubbard Model ◽  
Diamond Lattice ◽  
Infinite Dimensional

scholarly journals Specific heat of the two-dimensional Hubbard model

1997 ◽  
Vol 55 (19) ◽  
pp. 12918-12924 ◽  
Author(s):  
Daniel Duffy ◽  
Adriana Moreo
Keyword(s):  
Hubbard Model ◽  
Specific Heat ◽  
Two Dimensional

A Parallel Algorithm for Conserving Approximation of Lattice Models Having Both Interactions and Disorder

2001 ◽  
Vol 15 (24n25) ◽  
pp. 3270-3278
Author(s):  
B. Buhrow ◽  
J. J. Deisz
Keyword(s):  
Perturbation Theory ◽  
Hubbard Model ◽  
Specific Heat ◽  
Parallel Algorithm ◽  
Lattice Models ◽  
Numerical Calculations ◽  
Self Consistent ◽  
Attractive Hubbard Model ◽  
Local Pairing ◽  
Diagonal Disorder

We present a parallel algorithm for numerical calculations for electronic lattice models with interactions and disorder. In this scheme, diagonal and off-diagonal disorder are treated exactly per disorder configuration and interaction effects are evaluated using conserving approximations based on self-consistent perturbation theory. We demonstrate this method by calculating second-order corrections to the local pairing amplitude and specific heat for the attractive Hubbard model.

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