Physics – Condensed Matter
Scientific paper
1992-08-11
Physics
Condensed Matter
29 pages, 16 figures
Scientific paper
10.1103/PhysRevB.47.3553
We present results on thermodynamic quantities, resistivity and optical conductivity for the Hubbard model on a simple hypercubic lattice in infinite dimensions. Our results for the paramagnetic phase display the features expected from an intuitive analysis of the one-particle spectra and substantiate the similarity of the physics of the Hubbard model to those of heavy fermion systems. The calculations were performed using an approximate solution to the single-impurity Anderson model, which is the key quantity entering the solution of the Hubbard model in this limit. To establish the quality of this approximation we compare its results, together with those obtained from two other widely used methods, to essentially exact quantum Monte Carlo results.
Cox Daniel L.
Jarrell Mark
Pruschke Th.
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