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Author Romero, A. H. ♦ Brown, D. W. ♦ Lindenberg, K.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ PERTURBATION THEORY ♦ MOLECULAR CRYSTALS ♦ GROUND STATES ♦ ONE-DIMENSIONAL CALCULATIONS ♦ VARIATIONAL METHODS ♦ KINETIC ENERGY ♦ POLARONS ♦ PHONONS
Abstract The ground state of the Holstein molecular crystal model of a single electron in one dimension is studied using the Global-Local variational method, analyzing in particular the total energy, kinetic energy, phonon energy, and interaction energy over a broad region of the polaron parameter space. Through the application of objective criteria, a curve is identified that simply, accurately, and robustly locates the self-trapping transition separating small polaron and large polaron behavior. Particular attention is given to the kinetic energy, which is compared quantitatively with other perturbative and nonperturbative methods. {copyright} {ital 1999} {ital The American Physical Society}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-08-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 60
Issue Number 7


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