Dynamical Properties of the One-Dimensional Supersymmetric t-J Model:A View from Elementary Excitations
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概要
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Dynaunical pr'operties, strcla 2'LS dynaztuical spin atnd charge strtrcttmre factors atad single-patrticlespectral fttnctiotas, are studied f'or the or?e-dinaensional strpersyttametric t-J tnodel xvitlt inverse-sqtrare interaction. Exact diagonaliz?ttion anad tlae rectrrsioua taaethod a'tre trsed for' firaite systetaasLip to 16 sites. A sirnple rule is proposed to understand the superttutrltiplet strtrcttrre in theexcitationa spectrurta. Numerical calctrlations show th?tt tlae dynataaic?tl spita strtrctu.rre factor isindependent of the electron density in tlae region where otaly two spinons contribtrte. In tlaeelectron re?noval spectrtruaa frotaa half-filling, close cor?-espondence is fotrnd betxveez'n tlae dotanit'xauutcontribtrtion f'rona tlaree-spinon pltrs one-holon states ita the t-J unodel and the two-spiraozu excitaLions in the Haldane-Slaastry raaodel. Coznparison is rtaade xvith dynanuics of tlae nearest-neighborstrpersynmttaetric t-J tnodel.
- 社団法人日本物理学会の論文
- 1999-11-15
著者
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KURAMOTO Yoshio
Department of Physics, Tohoku University
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Kuramoto Yoshio
Department Of Applied Physics Tohoku University
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SAIGA Yasuhiro
Institute for Solid State Physics, University of Tokyo
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Saiga Y
Department Of Mathematics And Statistics University Of Melbourne:department Of Physics Tokyo Institu
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Saiga Yasuhiro
Institute For Solid State Physics University Of Tokyo
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Kuramoto Yoshio
Department Of Applied Physics Faculty Of Engineering Tohoku University
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