Exhaustion physics in the periodic Anderson model from iterated perturbation theory

Vidhyadhiraja, NS and Tahvildar-Zadeh, AN and Jarrell, M and Krishnamurthy, HR (2000) Exhaustion physics in the periodic Anderson model from iterated perturbation theory. In: Europhysics Letters, 49 (4). pp. 459-465.

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Abstract

We discuss the "exhaustion" problem in the context of the periodic Anderson model using iterated perturbation theory (IPT) within the dynamical mean-field theory. We find that, despite its limitations, IPT captures the exhaustion physics, which manifests itself as a dramatic, strongly energy-dependent, suppression of the effective hybridization of the self-consistent Anderson impurity problem. As a consequence, low-energy scales in the lattice case are strongly suppressed compared to the "Kondo scale" in the single impurity picture. The IPT results are in qualitative agreement with recent Quantum Monte Carlo results for the same problem.

Item Type:	Journal Article
Publication:	Europhysics Letters
Publisher:	Institute of Physics
Additional Information:	Copyright of this article belongs to Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	26 Sep 2008 05:03
Last Modified:	19 Sep 2010 04:50
URI:	http://eprints.iisc.ac.in/id/eprint/16040

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