Phase Diagram of the 1D t-J Model

A. Moreno, A. Muramatsu and S. Manmana
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A. Moreno: Universität Stuttgart, Institut für Theoretische Physik III
A. Muramatsu: Universität Stuttgart, Institut für Theoretische Physik III
S. Manmana: University of Colorado, JILA, Department of Physics

A chapter in High Performance Computing in Science and Engineering '11, 2012, pp 153-165 from Springer

Abstract: Abstract The ground-state phase diagram of the t-J model in one dimension is studied by means of the Density Matrix Renormalization Group. The phase boundaries separating the repulsive from the attractive Luttinger-liquid (LL) phase, and also the boundaries of the spin-gap region and phase-separation, are determined on the basis of correlation functions and energy gaps. In particular, we shed light on a contradiction between variational and renormalization-group (RG) results about the extent of the spin-gap phase, that results larger than the variational but smaller than the RG one.

Keywords: Phase Diagram; High Temperature Superconductor; Thermodynamic Limit; Hubbard Model; Metallic Phase (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-23869-7_13

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DOI: 10.1007/978-3-642-23869-7_13

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