Strong-coupling approach to ground-state properties of the Anderson lattice-model

Details Strong-coupling approach to ground-state properties of the Anderson lattice-model Strong-coupling approach to ground-state properties of the Anderson lattice-model

1996-09-05

arxiv.org/abs/cond-mat/9609060v1

Physica B 230-232, 434 (1997)

Physics

Condensed Matter

Paper presented at SCES'96, to appear in Physica B. 3 pages, uses ReVTeX 3.0 and epsf, 2 eps-figures included

Scientific paper

10.1016/S0921-4526(97)81586-4

A Slave-Boson perturbational approach to ground-state properties of the $U\to\infty$ periodic Anderson model is derived as an expansion around the Atomic Limit ($V=0$). In the case of zero temperature any constraint-integral or limiting procedure can be avoided, a gauge-symmetry broken Mean-Field phase is not involved. Physical quantities like the wave vector $k$ dependent Green's function obey a direct representation in Feynman-skeleton diagrams in $k$-space. A self-consistent $1/N$-expansion is derived, and its relation to the limit of infinite spatial dimension $d\to\infty$ is pointed out.

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