9,791 research outputs found

    Fermion spectrum and localization on kinks in a deconstructed dimension

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    We study the deconstructed scalar theory having nonlinear interactions and being renormalizable. It is shown that the kink-like configurations exist in such models. The possible forms of Yukawa coupling are considered. We find the degeneracy in mass spectrum of fermions coupled to the nontrivial scalar configuration.Comment: 19pages, 39figures, revised versio

    Kondo Effect in Fermi Systems with a Gap: A Renormalization Group Study

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    We present the results of a Wilson Renormalization Group study of the single-impurity Kondo and Anderson models in a system with a gap in the conduction electron spectrum. The behavior of the impurity susceptibility and the zero-frequency response function, T>T> are discussed in the cases with and without particle-hole symmetry. In addition, for the asymmetric Anderson model the correlation functions, <Sσ(0)><\vec S \cdot\vec \sigma (0)>,,and, and are computed.Comment: 10 pages, 10 figure

    Timber type separability in Southeastern United States on LANDSAT-1 MSS data

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    A quantitative, computer-aided study was made on the spectral separability of timber types and condition classes in the Southeastern United States, using LANDSAT-1 multispectral scanner data. It was concluded that LANDSAT-1 could be used effectively to discriminate the gross forest features of softwood, hardwood, and regeneration. The only significant detectable age difference would be between an established forest versus a young (or denuded) forest. The red or near infrared bands would be better for discrimination; phenological early and late spring data would be better than winter. And a temporal analysis would be superior to single-season analysis. Lastly, two spectral bands would be most cost effective for computer analysis. The study site was Sam Houston National Forest of East Texas, a typical forest in the Flatwoods Zone, Southern Region, U. S. Forest Service
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