Slave boson theories of correlated electron systems

Journal Article · Mon May 01 00:00:00 EDT 1995 · Journal of Low Temperature Physics

DOI:https://doi.org/10.1007/BF00752353· OSTI ID:107640

Woelfle, P ^[1]

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1. Universitaet Karlsruhe (Germany)

Slave boson theories of various models of correlated fermions are critically reviewed and several new results are presented. In the example of the Anderson impurity model the limitations of slave boson mean field theory are discussed. Self-consistent conserving approximations are compared with results obtained from the numerical renormalization group. The gauge field theory of the t-J-model is considered in the quasistatic approximation. It is shown that weak localization effects can give valuable information on the existence of gauge fields. Applications of the slave-boson approach due to Kotliar and Ruckenstein to the Hubbard model are also discussed.

• Sponsoring Organization: USDOE
• OSTI ID: 107640
• Report Number(s): CONF-9409365-; ISSN 0022-2291; TRN: 95:021350
• Journal Information: Journal of Low Temperature Physics, Vol. 99, Issue 3-4; Conference: International Euroconference on magnetic correlations, metal-insulator-transitions, and superconductivity in novel materials, Wuerzburg (Germany), 26-30 Sep 1994; Other Information: PBD: May 1995
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRON CORRELATION
MATHEMATICAL MODELS
HIGH-TC SUPERCONDUCTORS
HUBBARD MODEL
IMPURITIES
SPECTRAL FUNCTIONS