Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-02-02
Physics
Condensed Matter
Strongly Correlated Electrons
9 pages, 1 figure
Scientific paper
10.1103/PhysRevB.71.180405
Although diagrammatic perturbation theory fails for the dynamical-mean field theory of the double-exchange model, the theory is nevertheless Phi-derivable and hence thermodynamically consistent, meaning that the same thermodynamic properties are obtained from either the partition function or the Green's function. We verify this consistency by evaluating the magnetic susceptibility and Curie temperature for any Hund's coupling.
Fishman Randy S.
Jarrell Mark
Maier Thomas
Moreno Juana
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