Abstract
We present a powerful method for calculating the thermodynamic properties of infinite-dimensional Hubbard-type models using an exact diagonalization of an Anderson model with a finite number of sites. The resolution obtained for Green's functions is far superior to that of quantum Monte Carlo calculations. We apply the method to the half-filled Hubbard model for a discussion of the metal-insulator transition, and to the two-band Hubbard model where we find direct evidence for the existence of a superconducting instability at low temperatures.
Keywords
Hubbard modelSuperconductivityPhysicsQuantum Monte CarloFermionMott transitionCondensed matter physicsStrongly correlated materialInstabilityMonte Carlo methodMott insulatorQuantumMetal–insulator transitionStatistical physicsQuantum mechanicsElectronElectrical resistivity and conductivityMathematics
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Publication Info
- Year
- 1994
- Type
- article
- Volume
- 72
- Issue
- 10
- Pages
- 1545-1548
- Citations
- 615
- Access
- Closed
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Cite This
Michel Caffarel,
Werner Krauth
(1994).
Exact diagonalization approach to correlated fermions in infinite dimensions: Mott transition and superconductivity.
Physical Review Letters
, 72
(10)
, 1545-1548.
https://doi.org/10.1103/physrevlett.72.1545
Identifiers
- DOI
- 10.1103/physrevlett.72.1545